Koll, the Forgemaster + Phyrexian Altar + Diviner's Wand + Ardent Electromancer

Koll, the Forgemaster

Phyrexian Altar

Diviner's Wand

Ardent Electromancer

How it works

1. Cast Ardent Electromancer by paying 2.
2. Ardent Electromancer enters the battlefield, triggering itself and Diviner's Wand.
3. Resolve Ardent Electromancer's trigger, adding at least .
4. Resolve Diviner's Wand's trigger, attaching it to Ardent Electromancer.
5. Activate Phyrexian Altar by sacrificing Ardent Electromancer, adding one mana of any color.
6. Koll triggers, returning Ardent Electromancer from your graveyard to your hand.
7. Repeat.