Esix, Fractal Bloom + Timestream Navigator + Mycoloth

Esix, Fractal Bloom

Timestream Navigator

Mycoloth

How it works

1. At the beginning of your upkeep, Mycoloth triggers, creating a copy of Timestream Navigator for each +1/+1 counter on Mycoloth.
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.