Colossodon Herdcaller

At the beginning of your precombat main
phase, if Colossodon Herdcaller is your
behemoth, add {g}{u}{r}. (Your behemoth is
the creature you control with the greatest power.)
At the beginning of your end step, if
Colossodon Herdcaller isn't your
behemoth, draw a card.