Scavenger Shinobi

Sagejutsu (At the beginning of combat on your turn, this creature gets +1/+1 for each card type among cards in your graveyard. If there are 4 or more card types among cards in your graveyard
put a +1/+1 counter on this creature.)
{b}, {t}: Exile a card from target opponent's graveyard. If it was a creature card,
gain 2 life.