First printed in Teenage Mutant Ninja Turtles Eternal (2026)
April O'Neil, Human Element 
Legendary Creature — Human Detective
Whenever a player casts an artifact, instant, or sorcery spell, you create a Mutagen token. (It's an artifact with "
, 
, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery.")
"If you steal mutagen that doesn't exist from aliens that also don't exist, it's not really theft. More like creative writing!"
2/5
- Illustrated by
- Fahmi Fauzi
Legality
- Legal in
- Legacy, Vintage, Commander, Duel Commander, Oathbreaker
- Not legal in
- Standard, Pioneer, Modern, Pauper, Future Standard, Historic, Timeless, Alchemy, Penny Dreadful, Premodern, Old School 93/94, Gladiator, Pauper Commander, PreDH, Tiny Leaders, Brawl, Standard Brawl, Competitive Brawl
Rulings (3)
- April's ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.
- Some spells and abilities that create Mutagen tokens require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. The Mutagen token won't be created.
- Mutagen tokens are a kind of predefined token. Each one is a colorless artifact with the artifact subtype Mutagen and the ability ", , Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery."
Prices
MTGO price: 0.94 TIX, the cheapest non-foil print (average sell price on GoatBots, 28 Oct 2026).
Combos
1 combo:
- Infinite card draw, Infinite draw triggers…: April O'Neil, Human Element + Mm'menon, the Right Hand + Sensei's Divining Top
