Derevi, Empyrial Tactician
Cloudstone Curio
Chromatic Orrery

   Prerequisites

What do I need to start this combo?
All permanents on the battlefield.
You have a nonartifact creature card in hand that can be cast using two mana or less.

   Steps

How does this combo work?
1
Activate Chromatic Orrery's first ability by tapping it, adding 5.
2
Cast a nonartifact creature card from your hand by paying at most 2.
3
When the creature enters the battlefield, Cloudstone Curio triggers, returning Derevi from the battlefield to your hand.
4
Cast Derevi by paying 3.
5
When Derevi enters the battlefield, it and Cloudstone Curio trigger.
6
Resolve the Cloudstone Curio trigger, returning the creature cast in step 2 from the battlefield to your hand.
7
Resolve the Derevi trigger, untapping Cloudstone Curio.
8
Repeat.

   Results

What do I get from this combo?
Infinite LTB
Infinite ETB
Infinite colored mana
Infinite colorless mana
Infinite storm count
Infinite card draw
Infinite mana permanents you control can produce
Infinite draw triggers
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