Deceiver Exarch + Displace + Mnemonic Wall + Chromatic Orrery

Deceiver Exarch

Displace

Mnemonic Wall

Chromatic Orrery

How it works

1. Activate Chromatic Orrery's first ability by tapping it, adding 5.
2. Cast Displace by paying 3, blinking Mnemonic Wall and Deceiver Exarch.
3. Mnemonic Wall and Deceiver Exarch enter the battlefield, triggering their abilities.
4. Resolve the Mnemonic Wall trigger, returning Displace from your graveyard to your hand.
5. Resolve the Deceiver Exarch trigger, untapping Gilded Lotus.
6. Repeat.
7. Once you have infinite mana, you may instead activate Chromatic Orrery's second ability to draw infinite cards.