You can react to its play effect before a spell is named. Once the ability resolves, opponents can’t play spells with that name; spells already on the chain are unaffected.

Explanation & source

You can only name something that exists in Riftbound. You may identify a card by any description that is unambiguous, but a name that fits two or more cards does not count as naming one.

Riot’s answer ↗ · Vendetta Rules FAQ and Clarifications · Published 2026-08-14

Decks with this card

2 lists in the tournament archive

All 2 lists

Credited decklists containing Fallen Feline, with section-specific quantities
Deck / player	Event	Result	Copies
Ivern, Green FatherAserty	Los Angeles Regional Qualifier2026-09-25 · Standard Constructed	#151	Main Deck 2
Ivern, Green FatherAserty	Barcelona Regional Qualifier2026-08-22 · Standard Constructed	#277	Main Deck 2