Power Leak

Enchant enchantment
At the beginning of the upkeep of enchanted enchantment’s controller, that player may pay any amount of mana. Power Leak deals 2 damage to that player. Prevent X of that damage, where X is the amount of mana that player paid this way.

Drain Life

Spend only black mana on X.
Drain Life deals X damage to any target. You gain life equal to the damage dealt, but not more life than the player’s life total before the damage was dealt, the planeswalker’s loyalty before the damage was dealt, or the creature’s toughness.

Thoughtlace

Target spell or permanent becomes blue. (Mana symbols on that permanent remain unchanged.)

Nevinyrral’s Disk

Nevinyrral’s Disk enters tapped.
, : Destroy all artifacts, creatures, and enchantments.

Stasis

Players skip their untap steps.
At the beginning of your upkeep, sacrifice Stasis unless you pay .

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Channel

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

Tunnel

Destroy target Wall. It can’t be regenerated.

Nightmare

Flying (This creature can’t be blocked except by creatures with flying or reach.)
Nightmare’s power and toughness are each equal to the number of Swamps you control.

Guardian Angel

Prevent the next X damage that would be dealt to any target this turn. Until end of turn, you may pay any time you could cast an instant. If you do, prevent the next 1 damage that would be dealt to that permanent or player this turn.

Lure

Enchant creature
All creatures able to block enchanted creature do so.

Dwarven Warriors

: Target creature with power 2 or less can’t be blocked this turn.

Conversion

At the beginning of your upkeep, sacrifice Conversion unless you pay .
All Mountains are Plains.

Samite Healer

: Prevent the next 1 damage that would be dealt to any target this turn.