Pewterarm Thug

Menace
{b/g}{p/b}: Regenerate Pewterarm Thug.
Exert on attack: +2/+2 and trample until end of turn.
Pay 2 life: Untap Pewterarm Thug and put a Pewterdrag counter on it.
At the end of each turn, if it has 3 or more Pewterdrag tokens, sacrifice Pewterarm Thug