Derevi, Empyrial Tactician + Displacer Kitten + Retraction Helix + Noncreature permanent castable for

Prerequisites

• You control a creature other than Derevi that does not have summoning sickness.
• Noncreature permanent castable for

Steps

1. 1Cast Retraction Helix by paying , targeting any creature you control except Derevi that does not have summoning sickness.
2. 2Displacer Kitten triggers, blinking Derevi.
3. 3When Derevi enters the battlefield, it triggers, untapping the creature targeted in step 1.
4. 4Resolve Retraction Helix.
5. 5Cast the permanent from your hand by paying .
6. 6Displacer Kitten triggers, blinking Derevi.
7. 7When Derevi enters the battlefield, it triggers, untapping the creature targeted by Retraction Helix.
8. 8Resolve the permanent spell.
9. 9Activate the creature targeted by Retraction Helix by tapping it, returning the permanent cast in step 5 from the battlefield to your hand.
10. 10Repeat from step 5.

Effects

• Infinite ETB
• Infinite LTB
• Infinite storm count