Jerrycho, The Bold

If Jerrycho, The Bold takes damage from instant
and sorcery cards he gains X 1/1 counters
as well as double any 1/1 counters on him.
Whenever Jerrycho, The Bold gains a 1/1 counter
gain X life including 1/1 counters on him.
If Jerrycho, The Bold has 20 1/1 counters,
sacrifice him.