Esix, Fractal Bloom + Timestream Navigator + Grismold, the Dreadsower

Esix, Fractal Bloom

Timestream Navigator

Grismold, the Dreadsower

How it works

1. At the beginning of your end step, Grismold triggers, causing each player to create 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.