Vish Kal, Blood Arbiter, and Mikaeus, the Unhallowed

Prerequisites

• Vish Kal, Blood Arbiter on the battlefield
• Mikaeus, the Unhallowed on the battlefield
• No +1/+1 counters on Vish Kal

Steps

1. Sacrifice Vish Kal to his first ability, triggering Undying, which will return Vish Kal to the battlefield with a +1/+1 counter
2. Remove the +1/+1 counter with Vish Kal's second ability, targeting any other creature or Vish Kal, if all the other creatures are dead
3. Repeat steps 1-2

Results

• Infinite -1/-1 to any number of target creatures
• Infinite death triggers
• Infinite ETB