April O'Neil, Human Element

Legendary Creature — Human Detective · 2/5

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.")

Does Token maker

As a commander

Go Wide

Commander page

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Official 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.

January 27, 2026
Mutagen tokens are a kind of predefined token. Each one is a colorless artifact with the artifact subtype Mutagen and the ability "{1}, {T}, Sacrifice this token: Put a +1/+1 counter on target creature. Activate only as a sorcery."

January 27, 2026
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.

January 27, 2026