Screams from Within + Knight of Doves

Prerequisites

• There is a creature on the battlefield with toughness equal to 1.

Steps

1. 1Cast Screams from Within by paying , attaching it to a creature with toughness equal to 1.
2. 2The creature dies as a state-based action due to having zero toughness, triggering Knight of Doves and Screams from Within.
3. 3Resolve the Knight of Doves trigger, creating a 1/1 Bird creature token.
4. 4Resolve the Screams from Within trigger, returning it from your graveyard to the battlefield attached to the Bird.
5. 5Repeat from step 2.

Effects

• Infinite death triggers
• Infinite ETB
• Infinite LTB