Thousand-Faced Shadow + Palinchron + Coiling Stalker

Thousand-Faced Shadow

Palinchron

Coiling Stalker

How it works

1. Declare Palinchron and Coiling Stalker as attackers.
2. When they aren't blocked, activate up to seven lands you control by tapping them, adding at least 3.
3. Activate Thousand-Faced Shadow's ninjutsu ability by paying 2 and returning Coiling Stalker 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 Coiling Stalker's ninjutsu ability by paying 1 and returning Thousand-Faced Shadow from the battlefield to your hand, putting Coiling Stalker 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 4, this combo nets infinite mana.

This clever loop uses the ninjutsu abilities of both Thousand-Faced Shadow and Coiling Stalker to repeatedly bounce each other in and out of your hand during combat. When Thousand-Faced Shadow enters the battlefield attacking, its trigger clones Palinchron, which immediately untaps up to seven lands to help pay for the shifting ninjutsu costs. Because Palinchron's clones stay behind as unblocked attackers while you bounce and replay the ninjas, you rapidly amass an army of flying leviathans. This leaves you with infinite combat damage, infinite creature tokens, and as much mana as your lands can produce.