Satoru Umezawa + Great Whale + Moonblade Shinobi

Satoru Umezawa

Great Whale

Moonblade Shinobi

How it works

1. Declare Moonblade Shinobi as an attacker.
2. When it isn't blocked, activate up to seven lands you control by tapping them, adding at least 4.
3. Activate Great Whale's ninjutsu ability by paying 2 and returning Moonblade Shinobi from the battlefield to your hand, putting Great Whale onto the battlefield from your hand tapped and attacking.
4. When Great Whale enters the battlefield, it triggers, untapping up to seven lands.
5. Activate Moonblade Shinobi's ninjutsu ability by paying 2 and returning Great Whale from the battlefield to your hand, putting Moonblade Shinobi onto the battlefield from your hand tapped and attacking.
6. Repeat from step 2.
7. 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 classic bouncing-creature routine into an engine for infinite enters-the-battlefield and leaves-the-battlefield triggers, all fueled by lands that can produce enough mana. Satoru Umezawa is the linchpin that makes it all possible, granting ninjutsu to Great Whale from your hand while rewarding each ninjutsu activation with a peek at your library. By swapping Great Whale and Moonblade Shinobi back and forth from the battlefield to your hand, you continuously cash in on Great Whale's triggered ability to untap your lands and pay for the next ninja swap.