Satoru Umezawa + Great Whale + Sakashima's Student

Prerequisites

• Sakashima's Student 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 .
• You control at least one additional nonlegendary creature.

Steps

1. 1Declare Sakashima's Student 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 Sakashima's Student 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 Sakashima's Student's ninjutsu ability by paying and returning Great Whale from the battlefield to your hand, putting Sakashima's Student onto the battlefield from your hand tapped and attacking as a copy of any nonlegendary creature you control.
6. 6Repeat from step 2.
7. 7If you control up to seven lands that can tap to produce at least , this combo nets infinite mana.

Effects

• Infinite ETB
• Infinite LTB
• Infinite mana lands you control can produce
• Infinite untap of lands you control