Vendetta

Destroy target nonblack creature. It can't be regenerated. You lose life equal to that creature's toughness.

Sanctuary Cat

Pillory of the Sleepless

Enchant creature
Enchanted creature can't attack or block.
Enchanted creature has "At the beginning of your upkeep, you lose 1 life."

Death's Shadow

Death's Shadow gets -X/-X, where X is your life total.

Planar Cleansing

In Garruk's Wake

Destroy all creatures you don't control and all planeswalkers you don't control.

Blot Out the Sky

Create X tapped 2/1 white and black Inkling creature tokens with flying. If X is 6 or more, destroy all noncreature, nonland permanents.

Cloudsteel Kirin

Flying
Equipped creature has flying and "You can't lose the game and your opponents can't win the game."
Reconfigure {5} ({5}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)