Historical Rules · 6 June 2025
Rule 702.100a
Official source text from the 6 June 2025 Rules release
Evolve is a triggered ability. “Evolve” means “Whenever a creature you control enters, if that creature’s power is greater than this creature’s power and/or that creature’s toughness is greater than this creature’s toughness, put a +1/+1 counter on this creature.”