During your draw step, The Locust God triggers, creating a 1/1 Insect creature token with flying and haste.
Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
Activate Jalira by paying {2}{U}, tapping it and sacrificing the Insect, causing you to reveal Timestream Navigator and put it onto the battlefield.
Repeat each turn.

Infinite turns

The Locust God

Jalira, Master Polymorphist

Timestream Navigator

During your draw step, Nadir Kraken triggers, causing you to pay {1} to put a +1/+1 counter on it and creating a 1/1 Tentacle creature token.
Activate Timestream Navigator by paying {2}{U}{U}, tapping it and putting it on the bottom of your library, causing you to take an extra turn after this one.
Activate Jalira by paying {2}{U}, tapping it and sacrificing the Tentacle, causing you to reveal Timestream Navigator and put it onto the battlefield.
Repeat each turn.

Combos with "Jalira, Master Polymorphist"