Jeskai Ascendancy, Elvish Fury, and Marwyn, the Nurturer

Prerequisites

• Jeskai Ascendancy on the battlefield
• Elvish Fury in hand
• Marwyn, the Nurturer on the battlefield
• Marwyn does not have summoning sickness
• Less mana is required if Marwyn's power is greater than 1
• available

Steps

1. Activate Marwyn by tapping it, adding an amount of equal to its power
2. Cast Elvish Fury with its buyback cost by paying
3. Jeskai Ascendancy's first and second abilities trigger
4. Resolve the first Jeskai Ascendancy trigger, giving your creatures +1/+1 until end of turn and untapping them
5. Resolve the second Jeskai Ascendancy trigger, allowing you to loot
6. Resolve Elvish Fury, giving Marwyn +2/+2 and returning Elvish Fury to your hand
7. Repeat

Results

• Infinite draw triggers
• Infinite green mana
• Infinitely large creatures until end of turn
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite self-discard triggers
• Infinite storm count
• Infinite untap of creatures you control