Radiant Lotus + Clock of Omens + Retrofitter Foundry + Forensic Gadgeteer

Radiant Lotus

Clock of Omens

Retrofitter Foundry

Forensic Gadgeteer

How it works

1. Activate Radiant Lotus by tapping it and sacrificing two other artifacts, adding 6.
2. Activate Retrofitter Foundry's second ability by paying 1 and tapping it, creating a 1/1 Servo artifact creature token.
3. Activate Retrofitter Foundry's first ability by paying 2, untapping it.
4. Repeat steps 2 and 3 one additional time.
5. Activate Clock of Omens by tapping the Servos, untapping Radiant Lotus.
6. Repeat.