Skycat Sovereign's first ability applies only while it's on the battlefield.
2020-04-17
Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to Skycat Sovereign may become lethal if other creatures with flying you control leave the battlefield during that turn.
Flying
This creature gets +1/+1 for each other creature you control with flying.
: Create a 1/1 white Cat Bird creature token with flying.
