Isochron Scepter + Genesis Chamber + Krark-Clan Ironworks + Corridor Monitor + Cloudshift

Isochron Scepter

Genesis Chamber

Krark-Clan Ironworks

Corridor Monitor

Cloudshift

How it works

1. Activate Isochron Scepter by paying 2 and tapping it, casting a copy of Cloudshift without paying its mana cost.
2. Resolve Cloudshift, blinking Corridor Monitor.
3. Corridor Monitor enters the battlefield, triggering itself and Genesis Chamber.
4. Resolve the Corridor Monitor, untapping Isochron Scepter.
5. Resolve the Genesis Chamber trigger, creating a 1/1 Myr artifact creature token.
6. Activate Krark-Clan Ironworks by sacrificing the Myr, adding CC.
7. Repeat.