MTG

Prevent all combat damage that would be dealt this turn.

First strike

Elven Riders can't be blocked except by Walls and/or creatures with flying.

Destroy target permanent.

Defender, trample When Elder Land Wurm blocks, it loses defender.

Destroy target artifact. It can't be regenerated. That artifact's controller gains life equal to its converted mana cost.

Flying Whenever Cockatrice blocks or becomes blocked by a non-Wall creature, destroy that creature at end of combat.

Until end of turn, any time you could activate a mana ability, you may pay 1 life. If you do, add {C}.

Defender

Enchant creature Enchanted creature gets +X/+Y, where X is half the number of Forests you control, rounded down, and Y is half the number of Forest...

Defender (This creature can't attack.)

Defender (This creature can't attack.) {R}: Wall of Fire gets +1/+0 until end of turn.

Enchant creature Enchanted creature gets +3/+3.

{R}: Regenerate Uthden Troll.

Destroy target Wall. It can't be regenerated.

Enchant creature Enchanted creature gets +1/+0. {R}{R}{R}: Regenerate enchanted creature.

Remove Tempest Efreet from your deck before playing if you're not playing for ante. {T}, Sacrifice Tempest Efreet: Target opponent may pay 10 life....

Destroy target land.

Flying At the beginning of each end step, if a creature died this turn, put a carrion counter on Osai Vultures. Remove two carrion counters from Os...

{W}{W}, {T}: Destroy target black permanent.

{T}: Prevent the next 1 damage that would be dealt to target creature this turn.

{T}: Add {C}. {1}: Mishra's Factory becomes a 2/2 Assembly-Worker artifact creature until end of turn. It's still a land. {T}: Target Assembly-Work...