Arahbo, Roar of The World

Eminence — at the beginning of combate on
your turn, if Arahbo, Roar of the World is
in the command zone or on the battlefield,
another target Cat creature you control
gets +3/+3 until end of turn.
Whenever another Cat you control attacks, you
may pay {1}{g}{w}. If you do, it gets trample
and it gets +X/+X until end of turn,
where X is its power.