Kitsa, Otterball Elite + Deekah, Fractal Theorist + Intruder Alarm + Snap

Prerequisites

• You control up to two lands that can tap to produce at least .
• Kitsa has power 2 or greater.

Steps

1. 1Cast Snap by paying , targeting any applicable target.
2. 2Kitsa's prowess ability and Deekah trigger.
3. 3Resolve the Kitsa trigger, giving it +1/+1 until end of turn.
4. 4Holding priority, activate up to two lands by tapping them, adding at least .
5. 5Activate Kitsa by paying and tapping it, copying Snap, with the copy targeting any other creature.
6. 6Deekah triggers, creating a 0/0 Fractal creature token and putting two +1/+1 counters on it.
7. 7When the Fractal enters the battlefield, Intruder Alarm triggers, untapping all creatures.
8. 8Resolve the copy of Snap, returning the targeted creature from the battlefield to its owner's hand, and untapping up to two lands.
9. 9Repeat from step 4.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite mana lands you control can produce
• Infinite untap of creatures
• Infinite untap of lands you control
• Return all creatures you don't control to their owner's hand