Maha, Its Feathers Night + Elesh Norn, Grand Cenobite

Prerequisites

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Steps

1. 1All creatures your opponents control will have base toughness 0, and die as a state-based action due to having 0 toughness unless there is another effect increasing its toughness.
2. 2Whenever a creature enters the battlefield under an opponent's control, it will have base toughness 0, and die as a state-based action due to having 0 toughness unless there is another effect increasing its toughness.

Effects

• Creatures opponents control die upon entering
• Lock
• Reduce the toughness of creatures opponents control to 0