Thousand-Faced Shadow + Great Whale + Nezumi Prowler

Thousand-Faced Shadow

Great Whale

Nezumi Prowler

How it works

1. Declare Great Whale and Nezumi Prowler 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 Nezumi Prowler 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 Nezumi Prowler's ninjutsu ability by paying 1 and returning Thousand-Faced Shadow from the battlefield to your hand, putting Nezumi Prowler 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 4, this combo nets infinite mana.

This cunning loop relies on an unblocked Great Whale to fund a continuous cycle of ninjutsu activations, turning your attackers into a revolving door of battlefield entries. By swapping Thousand-Faced Shadow and Nezumi Prowler in and out of your hand, each iteration lets the shadow duplicate your original whale to constantly untap your lands with fresh triggers. It's a brilliantly recursive engine that multiplies your aquatic heavyweights into an overwhelming armada of token copies while keeping your mana flowing freely.