Awesome Cyber Monday

Whenever Shape Stealer blocks or becomes blocked by a creature, change Shape Stealer's base power and toughness to that creature's power and toughn...

As long as you have more cards in hand than each opponent, Secretkeeper gets +2/+2 and has flying.

You may have Sakashima the Impostor enter the battlefield as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, ...

When Rushing-Tide Zubera dies, if 4 or more damage was dealt to it this turn, draw three cards.

Counter target creature spell. Draw cards equal to that spell's mana value.

Counter target spell unless its controller pays {1} for each card in your hand.

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

Flying {2}, Return a land you control to its owner's hand: Target creature gets -X/-0 until end of turn, where X is the number of cards in your hand.

Flying {2}, Return a land you control to its owner's hand: Untap target land.

Reveal the top three cards of your library. An opponent chooses one of them. Put that card into your graveyard and the rest into your hand.

Flying {2}, Return a land you control to its owner's hand: Target land becomes the basic land type of your choice until end of turn.

Defender Your maximum hand size is increased by one.

All creatures get -X/-0, where X is the number of cards in your hand.

When Kiri-Onna enters the battlefield, return target creature to its owner's hand. Whenever you cast a Spirit or Arcane spell, you may return Kiri...

At the beginning of each player's draw step, that player draws an additional card.

When Kaho, Minamo Historian enters the battlefield, search your library for up to three instant cards, exile them, then shuffle. {X}, {T}: You may ...

Draw three cards. Discard three cards at the beginning of the next end step.

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 t...

{3}{U}, {T}: Counter target spell unless its controller pays {2}. Channel — {3}{U}, Discard Ghost-Lit Warder: Counter target spell unless its contr...

Enchant creature {U}: Tap enchanted creature. {U}: Untap enchanted creature.

(Nonexistent mana costs can't be paid.) Draw a card. Splice onto Arcane {1}{U} (As you cast an Arcane spell, you may reveal this card from your h...

Search target opponent's library for an artifact, creature, enchantment, or land card. Put that card onto the battlefield under your control. Then ...

Flying Whenever the fourth spell of a turn is cast, flip Erayo, Soratami Ascendant.

Whenever you cast a Spirit or Arcane spell, you may sacrifice Dreamcatcher. If you do, draw a card.