Satoru Umezawa + Great Whale + Moonsnare Specialist

Prerequisites

• Moonsnare Specialist does not have summoning sickness and cannot be blocked by an opponent.
• You control up to seven lands that can tap to produce at least .

Steps

1. 1Declare Moonsnare Specialist as an attacker.
2. 2When it isn't blocked, activate up to seven lands you control by tapping them, adding at least .
3. 3Activate Great Whale's ninjutsu ability by paying and returning Moonsnare Specialist from the battlefield to your hand, putting Great Whale onto the battlefield from your hand tapped and attacking.
4. 4When Great Whale enters the battlefield, it triggers, untapping up to seven lands.
5. 5Activate Moonsnare Specialist's ninjutsu ability by paying and returning Great Whale from the battlefield to your hand, putting Moonsnare Specialist onto the battlefield from your hand tapped and attacking.
6. 6When Moonsnare Specialist enters the battlefield, it triggers, returning up to one creature to its owner's hand.
7. 7Repeat from step 2.
8. 8If you control up to seven lands that can tap to produce at least , this combo nets infinite mana.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Return any number of creatures to their owners' hands