Arcanis the Omnipotent + Tolarian Kraken + Argothian Elder

Arcanis the Omnipotent

Tolarian Kraken

Argothian Elder

How it works

1. Activate Argothian Elder by tapping it, untapping two mana-producing lands.
2. Activate the lands by tapping them, adding at least 2.
3. Activate Arcanis's first ability by tapping it, causing you to draw three cards.
4. Tolarian Kraken triggers three times. Resolve the first two triggers, causing you to pay 2 to untap Arcanis and Argothian Elder.
5. Resolve the last Tolarian Kraken trigger, choosing not to pay.
6. Repeat.