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Why Purifying Shadow Pokemon Gives You Functional Hundo IVs, and Which Ones Are Worth It

Purifying adds +2 to every IV, turning 13/13/13 Shadows into guaranteed 15/15/15 Hundos. Here is the 2.7% hundo mechanic and which Shadow Pokemon are actually worth purifying in 2026.

This guide covers why purifying shadow pokemon gives you functional hundo ivs, and which ones are worth it. Follow the step-by-step instructions below for guides strategies, tips, and best practices.

Why Purifying Shadow Pokemon Gives You Functional Hundo IVs, and Which Ones Are Worth It

Why Purifying Shadow Pokemon Gives You Functional Hundo IVs, and Which Ones Are Worth It

Purifying a Shadow Pokemon adds exactly +2 to every IV stat, capped at 15. That means any Shadow with 13/13/13 or higher becomes a perfect 15/15/15 Hundo the moment you tap Purify. The mechanic is simple, but most players either do not know the threshold or purify the wrong Pokemon and regret it. Shadow Raid catches have a 6/6/6 IV floor, which means the chance of rolling 13/13/13 or higher is roughly 1 in 37, or about 2.7% (Doctor Pokegogo, 2026). That is almost six times better than the 1 in 216 hundo odds from a standard Tier 5 raid. The problem is that purifying destroys the Shadow form permanently, and Shadow Pokemon are the strongest raid attackers in the game.

Key Takeaways

  • Purifying adds +2 to every IV, turning 13/13/13+ Shadows into guaranteed 15/15/15 Hundos (PokéRanks, 2026).
  • Shadow Raid + Purify gives roughly 1/37 hundo odds, compared to 1/216 for standard raids (Doctor Pokegogo, 2026).
  • Shadow Pokemon deal 20% more attack damage but take 20% more damage (Digancy, 2026).
  • Shadow Pokemon cannot be traded. Purifying is the only way to make them tradeable.
  • Purify only when two or more of these are true: the species Mega Evolves, the IVs are 13/13/13+, or you have a backup high-IV Shadow.

How the Purification IV Boost Works

Purification is a linear addition. The game takes your Shadow Pokemon's current IVs, adds 2 to each stat, and caps the result at 15. A 12/12/12 Shadow becomes 14/14/14. A 13/14/15 Shadow becomes 15/15/15. A 0/0/0 Shadow becomes 2/2/2. There is no reroll, no randomness, and no variance (PokéRanks, 2026).

According to GamerHorizon, purification also instantly boosts the Pokemon to Level 25 unless it is already higher, reduces power-up Stardust costs by 10%, reduces candy costs by 10%, and replaces the Charged Attack Frustration with Return (GamerHorizon, 2026). The IV boost is the most valuable part for collectors and PvP players, but the Stardust discount matters for anyone planning to power up a common Shadow attacker.

[IMAGE: Shadow Pokemon purification screen showing IV increase - search terms: pokemon go purify shadow pokemon iv boost]

Why Shadow Pokemon Are Stronger Than Purified Ones

Shadow Pokemon deal 20% more attack damage in raids and gyms. That bonus makes a 0/0/0 Shadow Mewtwo stronger than a 15/15/15 normal Mewtwo in pure DPS terms (Digancy, 2026). The trade-off is a 20% defense reduction, which means Shadow Pokemon faint faster. In raids, faster fainting matters less than faster damage. In PvP, the defense drop can be decisive.

The 20% Shadow bonus applies before IVs. That means IV investment in Shadows is less critical than in normal Pokemon. A low-IV Shadow can still outperform a high-IV normal version because the attack multiplier is so large. This is why elite players keep their best raid attackers in Shadow form and only purify duplicates (Doctor Pokegogo, 2026).

[UNIQUE INSIGHT]: The Shadow attack bonus is applied as a flat 20% increase to move damage, not to CP. This means CP calculators that do not account for Shadow status will underestimate a Shadow Pokemon's actual raid DPS by roughly 20%. Always check Shadow-specific DPS rankings before deciding to purify.

The Three Conditions for Purification

Doctor Pokegogo's 2026 decision framework is the clearest method available. Purify only if two or more of these conditions are true (Doctor Pokegogo, 2026):

  1. The species can Mega Evolve. Shadow Pokemon cannot Mega Evolve. If you want to use that Mega form, purification is mandatory.
  2. The IVs are 13/13/13 or higher. Purifying creates a guaranteed Hundo. This is the only repeatable Hundo craft method in the game with better odds than Lucky Trades.
  3. You already own a second high-IV Shadow of the same species. If you have a backup, you can afford to convert one copy.

If none of these apply, keep the Pokemon Shadow. If only one applies, think twice. If two or more apply, purify with confidence.

[CHART: Hundo odds comparison - Wild 1/4096, Weather 1/1728, Raid 1/216, Lucky Trade 1/64, Shadow Raid + Purify 1/37 - source: Doctor Pokegogo 2026]

Which Shadow Pokemon Are Worth Purifying

The best purification targets are species with Mega Evolutions or high collection value. The top candidates are:

  • Mega-eligible Shadows: Tyranitar, Garchomp, Gardevoir, Pinsir, Venusaur, Charizard, Blastoise. These cannot Mega Evolve while Shadowed, so purification unlocks their full form.
  • 13/13/13+ Shadow Legendaries: If you catch a Shadow Mewtwo or Shadow Groudon with 13/13/13 or higher, purifying creates a Hundo Legendary with 12/12/12 IV floor equivalent. The collection value is high, but the raid DPS loss is significant.
  • PvP-focused Shadows: Sableye, Gligar, Drapion, Quagsire. Some Shadow forms are worse in PvP because the defense drop hurts CP thresholds. Purifying these can improve their league viability.

The worst purification targets are top-tier raid attackers. Shadow Mewtwo, Shadow Groudon, Shadow Raikou, and Shadow Metagross should almost never be purified unless you have a duplicate. The 20% attack bonus outweighs the IV gain from purification for pure raid damage (Pokeep, 2026).

[INTERNAL-LINK: Pokemon GO raid attackers tier list → Shadow vs Purified DPS comparison]

The Shadow Pokemon Trading Trap

Shadow Pokemon cannot be traded. If you want to trade a Shadow, you must purify it first. This is a permanent change. Once purified, the Pokemon can never return to Shadow form. Many players purify a low-IV Shadow just to make it tradeable, only to realize later that they destroyed a rare encounter for a small Stardust discount (Pokeep, 2026).

The rule is simple: do not purify a Shadow Pokemon just to trade it. If you want to trade, trade a normal Pokemon. Keep your Shadows for battles.

Frequently Asked Questions

Does purifying always give a Hundo?

No. Only Shadows with 13/13/13 or higher IVs become 15/15/15 after purification. A 12/12/12 Shadow becomes 14/14/14, which is excellent but not a Hundo (PokéRanks, 2026).

Can you undo purification?

No. Purification is permanent. Once a Shadow Pokemon is purified, it cannot be reverted (Doctor Pokegogo, 2026).

Are Shadow Pokemon better than purified for raids?

Yes. The 20% attack bonus makes even a 0/0/0 Shadow stronger than a 15/15/15 normal version in most raid scenarios (Digancy, 2026).

Does purifying remove Frustration?

Yes. Purification replaces Frustration with Return. However, you can also remove Frustration during Team GO Rocket Takeover events using a Charged TM without purifying (Doctor Pokegogo, 2026).

Can purified Shadow Pokemon be traded?

Yes. Once purified, the Pokemon can be traded under normal trading rules. Shadow Pokemon cannot be traded directly (Pokeep, 2026).

Final Thought

Purification is not a free Hundo button. It is a trade. You give up the 20% Shadow attack bonus, the Shadow aesthetic, and the ability to Mega Evolve, and you receive +2 IVs, a Stardust discount, and the Return move. For most raid attackers, that is a bad trade. For Mega-eligible species, 13/13/13+ IVs, or duplicates, it is the correct play. Before you tap Purify, ask the three questions. The answers will tell you whether you are making a smart play or a costly mistake.

[INTERNAL-LINK: Pokemon GO Mega Evolution guide → which Shadow Pokemon unlock Mega forms after purification]