Behemoth Caller

At the beginning of your upkeep, you may
remove all rally counters from Behemoth Caller.
If you do, reveal cards from the top of your
library until you reveal a creature card with
mana value equal to the number of rally
counters removed this way, put it onto the
battlefield, then put the rest of the cards on the
bottom of your library in any order. Otherwise,
put a rally counter on Behemoth Caller.