Cayth, Famed Mechanist, and Woe Strider

Prerequisites

• Cayth, Famed Mechanist on the battlefield
• Woe Strider on the battlefield
• The persist creature does not have a -1/-1 counter on it

Steps

1. Activate Woe Strider by sacrificing the persist creature
2. When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When the persist creature enters the battlefield, its fabricate ability triggers, putting a +1/+1 counter on it
4. Resolve the Woe Strider ability, causing you to scry 1
5. Repeat

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite scry 1