10 Hardest Onix Pokémon Cards to Pull
Ranked by estimated pull rates from English booster packs.
Onix’s long rocky body gives its illustrations a distinctive shape, even within a small artwork window. Specific reverse holos can add variety to a focused collection. Compare their estimated English odds here, remembering that equal-pool models do not prove individual short-printing.
Pull rates are estimates—see how this ranking works.
Estimated odds, limited coverage. This uses the same estimates as our pull-rate calculators, including labelled rough models and very-low-confidence assumptions. It does not establish the hardest Onix ever printed; nearby estimates may not represent a real difference in difficulty.
How the ranking works ↓We may earn a commission from qualifying purchases made through our eBay links. Card images are artwork references; edition stamps and foil finishes may differ.
Onix pull rates at a glance
A larger pack figure means a lower estimated chance. Figures are rounded to two significant digits; matching rounded estimates share a rank.
| Rank | Card & set | Estimated packs |
|---|---|---|
| 1 | Onix 138/264Fusion Strike · Reverse Holofoil | ~1 in 220Rough estimate |
| 2 | Onix 103/236Unified Minds · Reverse Holofoil | ~1 in 200Rough estimate |
| 3 | Onix 105/236Cosmic Eclipse · Reverse Holofoil | ~1 in 190Rough estimate |
| 4 | Onix 109/214Lost Thunder · Reverse Holofoil | ~1 in 180Rough estimate |
| 5 | Onix 98/147Aquapolis · Reverse Holofoil | ~1 in 150Rough estimate |
| 6 | Onix 71/168Celestial Storm · Reverse Holofoil | ~1 in 140Rough estimate |
| 7 = | Onix 68/163Battle Styles · Reverse Holofoil | ~1 in 120Rough estimate |
| 7 = | Onix 92/130Diamond and Pearl · Reverse Holofoil | ~1 in 120Rough estimate |
| 9 = | Onix 84/110Legendary Collection · Reverse Holofoil | ~1 in 110 |
| 9 = | Onix 90/182Paradox Rift · Reverse Holofoil | ~1 in 110Rough estimate |
The hardest-to-pull Onix countdown
#9 (joint) · Onix
Paradox Rift · 90/182 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 110 packs
Reverse Holofoil · Estimated raw price
$0.15 USD
Price observed Nov 4, 2026 UTC
This Paradox Rift printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1.5 effective ordinary reverse-holo slots per pack, shared equally across 162 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#9 (joint) · Onix
Legendary Collection · 84/110 · English · Reverse Holofoil
Estimated pull rate
About 1 in 110 packs
Reverse Holofoil · Estimated raw price
$197.09 USD
Price observed Nov 4, 2026 UTC
Legendary Collection’s distinctive reverse-holo treatment makes this a different collecting target from the ordinary finish. The displayed image may be an artwork reference; check the actual foil pattern when buying.
Where this estimate comes from
The estimated rarity frequency is divided across the eligible cards in that pool, assuming equal individual chances. It is not a measured count of this particular card.
Reverse holos use the community single-sheet estimate of 1/110. Common and uncommon estimates approximate the mixed nine-card sheet.
#7 (joint) · Onix
Diamond and Pearl · 92/130 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 120 packs
Reverse Holofoil · Estimated raw price
$1.93 USD
Price observed Nov 4, 2026 UTC
This Diamond and Pearl printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 119 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#7 (joint) · Onix
Battle Styles · 68/163 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 120 packs
Reverse Holofoil · Estimated raw price
$0.28 USD
Price observed Nov 4, 2026 UTC
This Battle Styles printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 123 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#6 · Onix
Celestial Storm · 71/168 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 140 packs
Reverse Holofoil · Estimated raw price
$0.49 USD
Price observed Nov 4, 2026 UTC
This Celestial Storm printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 140 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#5 · Onix
Aquapolis · 98/147 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 150 packs
Reverse Holofoil · Estimated raw price
$74.99 USD
Price observed Nov 4, 2026 UTC
This Aquapolis printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 151 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#4 · Onix
Lost Thunder · 109/214 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 180 packs
Reverse Holofoil · Estimated raw price
$3.16 USD
Price observed Nov 4, 2026 UTC
This Lost Thunder printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 178 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#3 · Onix
Cosmic Eclipse · 105/236 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 190 packs
Reverse Holofoil · Estimated raw price
$0.42 USD
Price observed Nov 4, 2026 UTC
This Cosmic Eclipse printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 193 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#2 · Onix
Unified Minds · 103/236 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 200 packs
Reverse Holofoil · Estimated raw price
$0.41 USD
Price observed Nov 4, 2026 UTC
This Unified Minds printing adds a reverse-holo version to the Pokémon’s checklist. The estimate concerns the exact collector number shown. An ordinary card with the same artwork does not count as this foil pull.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 198 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
#1 · Onix
Fusion Strike · 138/264 · English · Reverse Holofoil
Rough estimate. Limited evidence; actual odds may vary greatly.
Estimated pull rate
About 1 in 220 packs
Reverse Holofoil · Estimated raw price
$0.27 USD
Price observed Nov 4, 2026 UTC
Onix coils through a dark rocky opening with warm light beneath its stone segments. This reverse holo of 138/264 is a specific collecting target within Fusion Strike’s large pool, rather than evidence that Onix was individually short-printed.
Where this estimate comes from
Assumes 1 effective ordinary reverse-holo slots per pack, shared equally across 217 eligible reverse printings. This simplifies special-card replacements and unequal print sheets; the slot allowance is a modelling assumption.
How we compare Onix pull rates
We compare the chance of pulling one exact card from one English pack of its release. A rarity’s overall hit rate is different from the odds of finding a particular Onix within that rarity. Evidence ranges from reported community openings and print-sheet models to rough comparisons and assumed rarity frequencies. Each rough estimate carries its warning beside the odds; expand its explanation for the actual basis.
Japanese cards, guaranteed promos, deck cards and box toppers are outside this ranking. Vintage editions with shared odds take one position. Distinct pack-pulled finishes can qualify separately. Prices do not affect the order, and a missing price does not remove an otherwise eligible card.
Up to ten cards are selected automatically from available estimates, with any tie at the cutoff kept together. Estimates are rounded to two significant digits for comparison, not presented as precise measurements. New cards can enter when a matching printing and estimate are available; prices refresh with the catalogue. Descriptions stay with their card when the order changes.
Onix pull-rate questions
Which Onix card is hardest to pull?
Onix 138/264 (Fusion Strike, Reverse Holofoil) has the lowest estimated chance among the qualifying cards here: about 1 in 220 packs. This is the current model’s ordering, including any rough assumptions labelled above. It does not cover every Onix ever released.
Will opening 220 packs guarantee the top-ranked card?
No. For the first card listed at rank 1, opening 220 independent packs gives an estimated 63.8% chance of at least one copy. The average waiting time is not a promise; actual packs and factory collation can behave differently from this model.
Is the hardest Onix to pull also the most expensive?
Not necessarily. Artwork, demand, condition and how much product exists also matter to collectors. This guide ranks estimated pack odds. Our most expensive Onix guide compares available raw prices instead.
Do a booster box or an Elite Trainer Box guarantee a Onix?
These estimates do not establish any product-level guarantee. A named Onix promo included in a product is separate from the random cards inside its booster packs. Use the exact-card calculator to explore pack quantities and its stated assumptions.
Why can a reverse-holo Onix rank above a rarer-looking card?
This compares one exact printing. A large reverse-holo pool can make a particular card’s modelled chance small even when reverse holos overall are common. Most of these estimates assume equal chances within the pool. That does not prove this Pokémon is short-printed, and it does not describe the ordinary non-holo version.