Esix, Fractal Bloom + Timestream Navigator + Commander's Authority

Esix, Fractal Bloom

Timestream Navigator

Commander's Authority

How it works

1. At the beginning of your upkeep, the creature Commander's Authority is attached to triggers, creating a copy of Timestream Navigator.
2. Activate the oldest Timestream Navigator, paying 2 and putting Timestream Navigator on the bottom of your library to take an extra turn after this one.
3. Pass the turn.
4. Repeat.