Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated. That creature's controller may sacrifice a permanent for that player to ignore this effect until end of turn.
: Return Volrath's Curse to its owner's hand.

Defender (This creature can't attack.)
Wall of Diffusion can block creatures with shadow as though Wall of Diffusion had shadow.

Whenever an opponent casts a red spell, you gain 2 life.

: Add .
, Sacrifice Wasteland: Destroy target nonbasic land.

Watchdog blocks each combat if able.
As long as Watchdog is untapped, all creatures attacking you get -1/-0.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another until end of turn. (For example, you may change "nonred creature" to "nongreen creature" or "plainswalk" to "swampwalk.")

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
Draw a card.

When Wild Wurm enters the battlefield, flip a coin. If you lose the flip, return Wild Wurm to its owner's hand.

Flying
: Target creature gains flying until end of turn.

Flying

Destroy all creatures that aren't enchanted. They can't be regenerated.

All Sliver creatures have flying.

Destroy target land.

: Choose a creature card name. Reveal the top four cards of your library and put all of them with that name into your hand. Put the rest into your graveyard.

Buyback (You may pay an additional as you cast this spell. If you do, put this card into your hand as it resolves.)
As an additional cost to cast this spell, sacrifice a creature.
You gain life equal to the sacrificed creature's toughness.