Vraska the Unseen

+1: Until your next turn, whenever a creature deals combat damage to Vraska the Unseen, destroy that creature.
−3: Destroy target nonland permanent.
−7: Create three 1/1 black Assassin creature tokens with "Whenever this creature deals combat damage to a player, that player loses the game."

[+1]: Until your next turn, whenever a creature deals combat damage to Vraska, destroy that creature.
[−3]: Destroy target nonland permanent.
[−7]: Create three 1/1 black Assassin creature tokens with "Whenever this token deals combat damage to a player, that player loses the game."

+1: Until your next turn, whenever a creature deals combat damage to Vraska the Unseen, destroy that creature.
-3: Destroy target nonland permanent.
-7: Put three 1/1 black Assassin creature tokens onto the battlefield with "Whenever this creature deals combat damage to a player, that player loses the game."