Box

{1}{t} Give a defending creature +0/+1 or an attacking creature -1/+3, until end of turn if
target creature is a cat then give it an additional
+0/+1 until end of turn.
{1}{t} Restore toughness of target cat, you may
remove one effect from that cat, if it's a
permanent effect from a creature, enchantment,
or artifact, it comes back when Box is untapped.
Cats love to sit in boxes.