Door of Destinies [Secret Lair Drop Series]

Set: Secret Lair Drop Series Type: Artifact Rarity: Rare Cost: {4} As Door of Destinies enters the battlefield, choose a creature type.Whenever you cast a spell of the chosen type, put a charge counter on Door of Destinies.Creatures you control of the chosen type get +1/+1 for each charge counter on Door of Destinies.