Master Transmuter + Clock of Omens + Myr Battlesphere

Master Transmuter

Clock of Omens

Myr Battlesphere

How it works

1. Activate any artifact you control by tapping it, adding at least .
2. Activate Master Transmuter by paying , tapping it and returning Myr Battlesphere from the battlefield to your hand, putting Myr Battlesphere from your hand onto the battlefield.
3. Myr Battlesphere enters the battlefield, creating four 1/1 Myr artifact creature tokens.
4. Activate Clock of Omens twice by tapping four Myr tokens, untapping the mana-producing artifact and Master Transmuter.
5. Repeat.