Thousand-Faced Shadow + Palinchron + Moonblade Shinobi

Thousand-Faced Shadow

Palinchron

Moonblade Shinobi

How it works

1. Declare Palinchron and Moonblade Shinobi 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 Moonblade Shinobi 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 Moonblade Shinobi's ninjutsu ability by paying 2 and returning Thousand-Faced Shadow from the battlefield to your hand, putting Moonblade Shinobi 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 clever loop turns the fluid mechanics of ninjutsu into an engine of endless replication by bouncing your attackers back and forth from hand to battlefield. You use Thousand-Faced Shadow's entry trigger to clone Palinchron, whose own entrance untaps your lands to easily fund the mana costs of swapping cards. Meanwhile, Moonblade Shinobi serves as the alternate ninjutsu carrier to keep the cycle going, letting you continuously redeploy Thousand-Faced Shadow to amass an overwhelming army of attacking Palinchron tokens.