Infinite creature LTBInfinite mana lands you control can produceInfinite untap of lands you controlInfinite creature ETB
How it works
Declare Sakashima's Student as an attacker.
When it isn't blocked, activate up to seven lands you control by tapping them, adding at least 3.
Activate Palinchron's ninjutsu ability by paying 2 and returning Sakashima's Student from the battlefield to your hand, putting Palinchron onto the battlefield from your hand tapped and attacking.
When Palinchron enters the battlefield, it triggers, untapping up to seven lands.
Activate Sakashima's Student's ninjutsu ability by paying 1 and returning Palinchron 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.
Repeat from step 2.
If you control up to seven lands that can tap to produce at least 4, this combo nets infinite mana.
This clever loop uses Satoru Umezawa to grant an alternative ninjutsu cost to Palinchron, letting it bounce back to your hand while cheating it into play. Once Palinchron enters the battlefield, its triggered ability untaps your lands to refund your spent mana, while Sakashima's Student steps in as an affordable ninja to ninjutsu Palinchron right back out. By continuously trading places between the battlefield and your hand, you endlessly untap your lands for infinite mana and trigger any entry or exit effects you desire.