Flathead Trilobite

{4}{u},{t}: Sacrifice Trilobite Flathead, draw 2 cards
At the beginning of your combat step, if you drew 2 or more cards this turn, Flathead Trilobite gets +2/+0. If you 4 or more cards, it gets an additional +4/+0.
"As stubborn as the rocks they inhabit, and twice as violent."