Mister Fantastic, Sunken Palace, and Ioreth of the Healing House

Prerequisites

• Mister Fantastic on the battlefield
• Sunken Palace on the battlefield
• Ioreth of the Healing House on the battlefield
• available

Steps

1. Activate Sunken Palace's second ability by paying , tapping it and exiling seven cards from your graveyard, adding
2. Put any triggered ability on the stack
3. Holding priority, activate Mister Fantastic by paying and tapping it, ensuring to use the mana from Sunken Palace, targeting a triggered ability
4. Sunken Palace triggers
5. Holding priority, activate Ioreth of the Healing House by tapping it, untapping Mister Fantastic
6. Activate Mister Fantastic by paying and tapping it, copying Sunken Palace's trigger twice
7. Resolve the first Sunken Palace trigger, copying Mister Fantastic's ability, targeting a Sunken Palace trigger
8. Resolve the Mister Fantastic ability, copying Sunken Palace's trigger twice
9. Repeat from step 6

Results

• Infinite copies of triggered abilities you control on the stack