Yedora, Grave Gardener, Storm Cauldron, and Ugin's Conjurant

Prerequisites

• Yedora, Grave Gardener on the battlefield
• Storm Cauldron on the battlefield
• Ugin's Conjurant in hand

Steps

1. Cast Ugin's Conjurant by paying
2. Ugin's Conjurant enters the battlefield and dies as a state-based action due to having zero or less toughness
3. Yedora triggers, returning Ugin's Conjurant from your graveyard to the battlefield face down as a Forest land
4. Activate Ugin's Conjurant by tapping it, adding
5. Storm Cauldron triggers, returning Ugin's Conjurant from the battlefield to your hand
6. Repeat

Results

• Infinite +1/+1 counters on Ugin's Conjurant
• Infinite death triggers
• Infinite ETB
• Infinite green mana
• Infinite landfall triggers
• Infinite LTB
• Infinite storm count