Cast Dramatic Reversal by paying {1}{U}.
Kitsa's prowess ability triggers, giving it +1/+1 until end of turn.
Holding priority, activate any number of nonland permanents by tapping them, adding at least {2}.
Activate Kitsa's second ability by paying {2} and tapping it, copying Dramatic Reversal.
Resolve the copy of Dramatic Reversal, untapping all nonland permanents you control.
Repeat from step 3.

Infinite magecraft triggers

Infinite untap of creatures you control

Infinite mana creatures you control can produce

Kitsa, Otterball Elite

Dramatic Reversal

Activate Nykthos and up to one other land by paying {2} and tapping them, adding at least {5}{U}.
Cast Frantic Search by paying {2}{U}.
Kitsa's prowess ability triggers, giving it +1/+1 until end of turn.
Holding priority, activate Kitsa's second ability by paying {2} and tapping it, copying Frantic Search.
Resolve the copy of Frantic Search, causing you to loot twice and untap Minamo, Nykthos and up to one other land.
Activate Nykthos and up to one other land by paying {2} and tapping them, adding at least {5}{U}.
Activate Minamo's second ability by paying {U} and tapping it, untapping Kitsa.
Repeat from step 4.

Infinite self-discard triggers

Infinite draw triggers

Infinite looting

Near-infinite mana lands you control can produce

Near-infinite magecraft triggers

Near-infinite untap of lands you control

Frantic Search

Minamo, School at Water's Edge

Nykthos, Shrine to Nyx

Activate Izzet Boilerworks and another land by tapping them, adding at least {2}{U}.
Cast Frantic Search by paying {2}{U}.
Kitsa's prowess ability triggers, giving it +1/+1 until end of turn.
Holding priority, activate Kitsa's second ability by paying {2} and tapping it, copying Frantic Search.
Resolve the copy of Frantic Search, causing you to loot twice and untap Minamo, Izzet Boilerworks and another land.
Activate Izzet Boilerworks and another land by tapping them, adding at least {2}{U}.
Activate Minamo's second ability by paying {U} and tapping it, untapping Kitsa.
Repeat from step 4.

Izzet Boilerworks

Activate Liquimetal Torque's second ability by tapping it, causing Kitsa to become an artifact until end of turn.
Cast Blinkmoth Infusion by paiyng {12}{U}{U}, minus {1} for each artifact you control.
Kitsa's prowess ability triggers, giving it +1/+1 until end of turn.
Holding priority, activate any number of mana-producing artifacts you control, adding at least {2}.
Activate Kitsa's second ability by paying {2} and tapping it, copying Blinkmoth Infusion.
Resolve the copy of Blinkmoth Infusion, untapping all artifacts you control.
Repeat from step 4.

Infinite mana artifacts you control can produce

Infinite untap of artifacts you control

Blinkmoth Infusion

Liquimetal Torque

Cast Rude Awakening by paying {4}{G}, choosing its first mode.
Kitsa's prowess ability triggers, giving it +1/+1 until end of turn.
Holding priority, activate any number of lands you control by tapping them, adding at least {2}.
Activate Kitsa's second ability by paying {2} and tapping it, copying Rude Awakening.
Resolve the copy of Rude Awakening, untapping all lands you control.
Repeat from step 3.

Infinite mana lands you control can produce

Infinite untap of lands you control

Infinite untap of nontoken creatures you control

Infinite mana nontoken creatures you control can produce

Ashaya, Soul of the Wild

Rude Awakening

Activate Kitsa by tapping it, causing you to loot. The discarded card will be put on top of your library instead of into your graveyard due to Library of Leng.
Wan Shi Tong's second ability triggers, creating two 1/1 Spirit creature tokens.
When the Spirits enter, Intruder Alarm triggers twice, untapping all creatures twice.
Repeat.

Infinite ETB

Infinite creature tokens

Infinite untap of all creatures

Wan Shi Tong, All-Knowing

Library of Leng

Intruder Alarm

Cast Snap by paying {1}{U}, targeting any applicable target.
Kitsa's prowess ability and Deekah trigger.
Resolve the Kitsa trigger, giving it +1/+1 until end of turn.
Holding priority, activate up to two lands by tapping them, adding at least {2}.
Activate Kitsa by paying {2} and tapping it, copying Snap, with the copy targeting any other creature.
Deekah triggers, creating a 0/0 Fractal creature token and putting two +1/+1 counters on it.
When the Fractal enters the battlefield, Intruder Alarm triggers, untapping all creatures.
Resolve the copy of Snap, returning the targeted creature from the battlefield to its owner's hand, and untapping up to two lands.
Repeat from step 4.

Infinite LTB

Return all creatures you don't control to their owner's hand

Deekah, Fractal Theorist

Snap

Combos with "Kitsa, Otterball Elite"