Vorel of the Hull Clade + Ichormoon Gauntlet + Liquimetal Torque + Ugin, the Spirit Dragon

Vorel of the Hull Clade

Ichormoon Gauntlet

Liquimetal Torque

Ugin, the Spirit Dragon

How it works

1. Activate Liquimetal Torque's second ability by tapping it, causing Ugin to become an artifact until end of turn.
2. Activate Vorel of the Hull Clade by paying and tapping it, doubling the number of counters on Ugin.
3. Activate Ugin by removing twelve loyalty counters from it, causing you to take an extra turn after this one.
4. Repeat each turn.