Teferi, Timebender + Luxior, Giada's Gift + Doubling Season + Lilysplash Mentor

Teferi, Timebender

Luxior, Giada's Gift

Doubling Season

Lilysplash Mentor

How it works

1. Activate Luxior's first equip ability by paying 1, attaching it to Teferi.
2. Activate Lilysplash Mentor by paying 1, blinking Teferi, which enters the battlefield with ten loyalty counters due to Doubling Season.
3. Activate Teferi's third loyalty ability by removing nine loyalty counters from it, causing you to take an extra turn after this one.
4. Repeat each turn.