Thousand-Faced Shadow + Great Whale + Mist-Syndicate Naga

Thousand-Faced Shadow

Great Whale

Mist-Syndicate Naga

How it works

1. Declare Great Whale and Mist-Syndicate Naga 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 Mist-Syndicate Naga 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 Mist-Syndicate Naga's ninjutsu ability by paying 2 and returning Thousand-Faced Shadow from the battlefield to your hand, putting Mist-Syndicate Naga 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 5, this combo nets infinite mana.