Robinhood of Sherwood

Double strike, reach, vigilance.
When Robinhood deals damage to a player or planeswalker, create that many Treasure artifact
tokens with {t}: Sacrifice to add one mana of any
color to your mana pool.
Whenever you sacrifice an artifact, gain 2 life.
Taking from the rich to give to the poor... and a little
for himself and his band on the side.