Dualcaster Mage, Yahenni, Undying Partisan, and Lively Dirge

Prerequisites

• Dualcaster Mage in hand
• Yahenni, Undying Partisan on the battlefield
• Lively Dirge in hand
• available

Steps

1. Cast Lively Dirge by paying plus an additional to select its second mode, targeting a card in your graveyard
2. Holding priority, cast Dualcaster Mage by paying its mana cost
3. When Dualcaster Mage enters, it triggers, targeting Lively Dirge
4. Holding priority, activate Yahenni by sacrificing Dualcaster Mage
5. Resolve the Dualcaster Mage trigger, copying Lively Dirge Resolve the Lively Dirge copy, returning Dualcaster Mage from your graveyard to the battlefield
6. Repeat from step 3

Results

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