Magus of the Order, Concordant Crossroads, Greenwarden of Murasa, Protean Hulk, Mikaeus, the Unhallowed, Walking Ballista, Phyrexian Delver, and Viscera Seer

Prerequisites

• Magus of the Order and Concordant Crossroads on the battlefield
• All other cards in library
• You control an additional green creature
• availiable

Steps

1. Activate Magus of the Order, sacrificing itself and a green creature and searching for Greenwarden of Murasa
2. Return Magus of the Order to your hand with Greenwarden of Murasa's trigger
3. Cast Magus of the Order
4. Activate Magus of the Order, sacrificing itself and Greenwarden of Murasa and searching for Protean Hulk
5. Return Magus of the Order to your hand with Greenwarden of Murasa's trigger
6. Cast Magus of the Order
7. Activate Magus of the Order, sacrificing itself and Protean Hulk
8. Protean Hulk triggers, searching your library for Viscera Seer and Phyrexian Delver and putting them onto the battlefield
9. Phyrexian Delver triggers, returning Protean Hulk to the battlefield
10. Resolve the Magus of the Order ability, failing to find
11. Activate Viscera Seer's ability, sacrificing Protean Hulk
12. Protean Hulk triggers, searching your library for Mikaeus and Walking Ballista and putting them onto the battlefield
13. Resolve the Viscera Seer ability, scrying 1
14. Activate Viscera Seer's ability, sacrificing Walking Ballista
15. Walking Ballista's undying triggers, returning it to the battlefield with a +1/+1 counter
16. Resolve the Viscera Seer ability, scrying 1
17. Remove a +1/+1 counter from Walking Ballista with its ability, dealing 1 damage to any target
18. Repeat steps 14-17

Results

• Infinite damage
• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers
• Infinite scry