Lernean Hydra

Lernean Hydra enters the battlefield with three
+1/+1 counters on it.
Trample
If Lernean Hydra is dealt lethal damage,
regenerate it, then double the number of +1/+1 counters on it.
If Lernean Hydra's power is 6 or greater, it can
block an additional creature each combat.