Aether Shockwave

Flying Bushido 1 (Whenever this creature blocks or becomes blocked, it gets +1/+1 until end of turn.)

At the beginning of your upkeep, if you have seven or more cards in hand, you gain 4 life.

Flying Whenever you cast a Spirit or Arcane spell, destroy all permanents with that spell's mana value.

Sweep — Return any number of Plains you control to their owner's hand. Creatures you control get +1/+1 until end of turn for each Plains returned this way.

Enchant creature Enchanted creature can't attack or block unless its controller pays 1 for each card in your hand.

Cast this spell only during combat after blockers are declared. Target unblocked attacking creature becomes blocked. (This spell works on creatures that can't be blocked.) Draw a card.

As long as you have more cards in hand than each opponent, this creature gets +1/+2 and has "Whenever this creature deals combat damage, you gain 3 life."

Flying At the beginning of your upkeep, return a white creature you control to its owner's hand.