Pakisaurus

Trample, haste
Whenever Pakisaurus deals combat damage to a
player, reveal that many cards from the top of
your library. Put any number of Dinosaur
creature cards from among them onto your hand
then this creature gets X +1/+1 counters where
X is the combined power of the dinosaur
creatures put into your hand this way. Then put
the rest of the cards on the bottom of your
library in any order.