Kera, Greedy Monk

Kera, Greedy Monk enters with a charge counter.
Kera, Greedy Monks power is equal to the
number of charge counters on it plus 1.
Whenever Kera, Greedy Monk attacks, put
charge counters equal to its power on it.
At the beginning of your end step, if Kera,
Greedy Monk did not attack this turn, remove
all charge counters on it.
"That did NOT hit me, what is this snapshotting??"
-Kera