Infinite card drawInfinite draw triggersNear-infinite magecraft triggersNear-infinite untap of creatures you controlNear-infinite mana creatures you control can produce
How it works
Cast To Arms! by paying 1.
Kitsa's prowess ability triggers, giving it +1/+1 until end of turn.
Holding priority, activate any number of creatures by tapping them, adding at least 2.
Activate Kitsa's second ability by paying 2 and tapping it, copying To Arms!.
Resolve the copy of To Arms!, untapping all creatures you control and causing you to draw a card.
Repeat from step 3.
This clever loop transforms Kitsa, Otterball Elite into a self-sustaining engine by taking advantage of its prowess ability to unlock its copy-making potential. When you cast To Arms!, Kitsa's power bumps up to 3, satisfying the requirement to pay {2} and tap her to copy the spell. Meanwhile, the untap effect from To Arms! refreshes Kitsa and your other mana-producing creatures, allowing you to pay the activation cost repeatedly while drawing through your entire deck.