Ghostly Flicker + Lithoform Engine + Mana Vault

Ghostly Flicker

Lithoform Engine

Mana Vault

How it works

1. Cast Ghostly Flicker by paying 2, targeting any two permanents.
2. Holding priority, activate Mana Vault by tapping it, adding 3.
3. Activate Lithoform Engine's second ability by paying 3 and tapping it, copying Ghostly Flicker, with the copy targeting Mana Vault and Lithoform Engine.
4. Resolve the copy of Ghostly Flicker, blinking Mana Vault and Lithoform Engine.
5. Repeat from step 2.