Marwyn, the Nurturer + Eternal Witness + Temur Sabertooth + Mobilize

Prerequisites

• Marwyn does not have summoning sickness.
• Marwyn has a power of at least seven.

Steps

1. 1Activate Marwyn by tapping it, adding at least seven .
2. 2Cast Mobilize by paying , untapping all creatures you control.
3. 3Activate Temur Sabertooth by paying , returning Eternal Witness from the battlefield to your hand.
4. 4Cast Eternal Witness by paying .
5. 5Eternal Witness enters the battlefield, returning Mobilize from your graveyard to your hand.
6. 6Repeat.

Effects

• Infinite blinking of some creatures
• Infinite creature ETB
• Infinite creature LTB
• Infinite green mana
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures you control