Dualcaster Mage, Bloodthrone Vampire, and Stitch Together

Prerequisites

• Dualcaster Mage in hand
• Bloodthrone Vampire on the battlefield
• Stitch Together in hand
• available

Steps

1. Cast Stitch Together by paying its mana cost
2. Holding priority, cast Dualcaster Mage by paying its mana cost
3. When Dualcaster Mage enters, it triggers, targeting Stitch Together
4. Holding priority, activate Bloodthrone Vampire by sacrificing Dualcaster Mage, giving Bloodthrone Vampire +2/+2 until end of turn
5. Resolve the Dualcaster Mage trigger, copying Stitch Together Resolve the Stitch Together copy, returning Dualcaster Mage from your graveyard to the battlefield
6. Repeat from step 3

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinitely large creature until end of turn