O.W.L.s

If there is a white card in your graveyard, gain
3 life
If there is a blue card in your graveyard, draw
a card
If there is a black card in your graveyard, target
creature gets -2/-2
If there is a red card card in your graveyard,
destroy target artifact or land
If there is a green card in your graveyard, create
a 3/3 Green Beast Creature Token