Icewind Stalwart, Yahenni, Undying Partisan, and Karmic Guide

Prerequisites

• Icewind Stalwart in hand
• Yahenni, Undying Partisan on the battlefield
• Karmic Guide on the battlefield
• available

Steps

1. Cast Icewind Stalwart by paying its mana cost
2. When Icewind Stalwart enters the battlefield, it triggers, targeting Karmic Guide Holding priority, activate Yahenni by sacrificing Icewind Stalwart
3. Resolve the Icewind Stalwart ability, blinking Karmic Guide When Karmic Guide enters, it triggers, returning Icewind Stalwart from your graveyard to the battlefield
4. Repeat from step 2

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers