Thousand-Faced Shadow + Palinchron + Biting-Palm Ninja

Thousand-Faced Shadow

Palinchron

Biting-Palm Ninja

How it works

1. Declare Palinchron and Biting-Palm Ninja as attackers.
2. When they aren't blocked, activate up to seven lands you control by tapping them, adding at least 4.
3. Activate Thousand-Faced Shadow's ninjutsu ability by paying 2 and returning Biting-Palm Ninja from the battlefield to your hand, putting Thousand-Faced Shadow onto the battlefield from your hand tapped and attacking.
4. When Thousand-Faced Shadow enters the battlefield, it triggers, creating a token copy of Palinchron that is tapped and attacking.
5. When the Palinchron token enters the battlefield, it triggers, untapping up to seven lands.
6. Activate Biting-Palm Ninja's ninjutsu ability by paying 2 and returning Thousand-Faced Shadow from the battlefield to your hand, putting Biting-Palm Ninja onto the battlefield from your hand tapped and attacking.
7. Repeat from step 2.
8. Deal combat damage using the Palinchron tokens, dealing infinite combat damage to the defending opponent.
9. If you control up to seven lands that can tap to produce at least 5, this combo nets infinite mana.

This elegant loop transforms the subtle art of ninjutsu into a factory for infinite armies and mana. By using Thousand-Faced Shadow's enter-the-battlefield trigger to constantly stamp out fresh copies of Palinchron, you continuously untap your lands to fund the mana costs required to bounce and replay your attackers. Meanwhile, Biting-Palm Ninja acts as your alternate swapping partner to keep the chain flowing seamlessly, allowing you to cycle your ninjas back to hand while leaving a devastating board of flying leviathans behind.