Ginny, Slayer of Cardboard

Reach, First Strike
Whenever another cat enters the battlefield
under your control, put a 1/1 counter on Ginny,
Slayer of Cardboard.
Remove a 1/1 counter from Ginny, Slayer of
Cardboard: another target cat you control gains
indestructible until end of turn.
"Dammit, Ginny! Stop eating the cardboard!"