When Oubliette enters, target creature phases out until Oubliette leaves the battlefield. Tap that creature as it phases in this way. (Auras and Equipment phase out with it. While permanents are phased out, they're treated as though they don't exist.)
The first spell you cast each turn has cascade. (When you cast your first spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Return all artifact and enchantment cards from all graveyards to the battlefield under their owners' control. (Auras with nothing to enchant remain in graveyards.)
When Avenger of Zendikar enters, create a 0/1 green Plant creature token for each land you control.Landfall — Whenever a land you control enters, you may put a +1/+1 counter on each Plant creature you control.
When Well of Ideas enters, draw two cards.At the beginning of each other player's draw step, that player draws an additional card.At the beginning of your draw step, draw two additional cards.
Other blue creatures you control get +1/+1.: Target artifact creature becomes blue until end of turn.Tap an untapped blue creature you control: Add . Spend this mana only to cast artifact spells or activate abilities of artifacts.
, , Exile Magus of the Will: Until end of turn, you may play lands and cast spells from your graveyard. If a card would be put into your graveyard from anywhere this turn, exile that card instead.
When Terastodon enters, you may destroy up to three target noncreature permanents. For each permanent put into a graveyard this way, its controller creates a 3/3 green Elephant creature token.