Burzob, Ambitious Thief

Creatures with power greater than Burzob,
Ambitious Thief can't block it.
Whenever Burzob, Ambitious Thief deals combat damage to a player, that players reveals their hand
to you. You choose a nonland card from it and
that player exiles that card. Then, put a +1/+1
counter on Burzob, Ambitious Thief.
You may play cards exiled with Burzob,
Ambitious Thief, and you may spend mana as
though it were mana of any color to cast those
spells.