Satoru Umezawa + Great Whale + Azra Smokeshaper

Satoru Umezawa

Great Whale

Azra Smokeshaper

How it works

1. Declare Azra Smokeshaper as an attacker.
2. When it isn't blocked, activate up to seven lands you control by tapping them, adding at least 3.
3. Activate Great Whale's ninjutsu ability by paying 2 and returning Azra Smokeshaper 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 Azra Smokeshaper's ninjutsu ability by paying 1 and returning Great Whale from the battlefield to your hand, putting Azra Smokeshaper 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 4, this combo nets infinite mana.

This loop relies on Satoru Umezawa to grant every creature in your hand ninjutsu, turning your hand into a revolving door of recursive threats. By swapping Azra Smokeshaper and Great Whale back and forth through combat, you continually trigger the Whale's massive land-untapping ability to pay for the ninjutsu costs while generating a surplus of mana. Azra Smokeshaper's cheap ninjutsu cost keeps the cycle turning efficiently, letting you infinitely replay both creatures to net unbounded mana and endless enters-the-battlefield triggers.