Vector, the Studious

Whenever an opponent casts a spell, you may
exile another nontoken Cat creature you
control and a card from your hand. If you do,
entomb that spell.
If you would draw a card, you may instead search
your library for a Cat creature card, reveal it, put
it into your hand, then shuffle your library.
Other Cat creatures you control get +1/+1 and
have vigilance.