Dualcaster Mage, Bartolomé del Presidio, and Unbreakable Bond

Prerequisites

• Dualcaster Mage in hand
• Bartolomé del Presidio on the battlefield
• Unbreakable Bond in hand
• available

Steps

1. Cast Unbreakable Bond by paying its mana cost
2. Holding priority, cast Dualcaster Mage by paying its mana cost
3. When Dualcaster Mage enters, it triggers, targeting Unbreakable Bond
4. Holding priority, activate Bartolomé del Presidio by sacrificing Dualcaster Mage, putting a +1/+1 counter on Bartolomé del Presidio
5. Resolve the Dualcaster Mage trigger, copying Unbreakable Bond Resolve the Unbreakable Bond copy, returning Dualcaster Mage from your graveyard to the battlefield
6. Repeat from step 3

Results

• Infinite +1/+1 counters on a creature
• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers