Orphaned Behemoth

Mighty 2 (This creature enters the battlefield with
two +1/+1 counters on it. At the beginning of your
upkeep, if you gained life last turn, put a +1/+1
counter on this creature.)
At the beginning of your upkeep, if Orphaned
Behemoth has six or more +1/+1 counters on it,
it loses mighty. Then, you may put a trample
counter on it.