Thousand-Faced Shadow + Great Whale + Ingenious Infiltrator

Thousand-Faced Shadow

Great Whale

Ingenious Infiltrator

How it works

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

This clever loop relies on swapping your attackers back and forth from your hand using ninjutsu, letting you continuously replay their enter-the-battlefield abilities. By bouncing Ingenious Infiltrator to pay for Thousand-Faced Shadow, you trigger Thousand-Faced Shadow to churn out a fresh token copy of Great Whale—which immediately untaps your lands to pay for the next cycle. You can then swap back by paying Ingenious Infiltrator's ninjutsu cost, all while netting extra mana and swarming the board with an endless army of whales.