Dualcaster Mage, and Necromantic Selection

Prerequisites

• Dualcaster Mage in hand
• Necromantic Selection in hand
• available

Steps

1. Cast Necromantic Selection by paying
2. Holding priority, cast Dualcaster Mage by paying
3. When Dualcaster Mage enters the battlefield, it triggers, copying Necromantic Selection
4. Resolve the copy of Necromantic Selection, destroying all creatures and returning Dualcaster Mage from your graveyard to the battlefield
5. Repeat from step 3

Results

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