Cast Zndrsplt's Judgment by paying {4}{U}, creating a token copy of Combat Celebrant.
At the beginning of your combat phase, Brudiclad triggers, creating a 2/1 Phyrexian Myr creature token, then choosing to have all tokens you control become copies of the Combat Celebrant token.
Declare one of the Combat Celebrant copy as an attacker, choosing to exert it as it attacks.
The Combat Celebrant copy triggers, untapping all other creatures you control and causing you to get an additional combat phase after this one.
Repeat from step 2.

Infinite combat phases

Infinite damage

Brudiclad, Telchor Engineer

Combat Celebrant

Zndrsplt's Judgment

Cast Zndrsplt's Judgment by paying {5}{U}, creating a token copy of Timestream Navigator.
At the beginning of your combat phase, Brudiclad triggers, creating a 2/1 Phyrexian Myr creature token, then choosing to have all tokens you control become copies of the Timestream Navigator token.
Activate Timestream Navigator by paying {2}{U}{U} and tapping it and putting it onto the bottom of your library, causing you to take an extra turn after this one.
Move to your next turn.
Repeat from step 2.

Infinite turns

Lock

Timestream Navigator

Cast Zndrsplt's Judgment by paying {4}{U}, targeting Hellkite Courser.
Holding priority, activate Rootha by paying {2} and returning it to your hand, targeting Zndrsplt's Judgment.
Choose to have Rootha returned to the command zone instead of your hand.
Resolve the Rootha ability, copying Zndrsplt's Judgment, targeting Hellkite Courser.
Resolve the copy of Zndrsplt's Judgment, creating a token copy of Hellkite Courser.
The Hellkite Courser token enters the battlefield, putting Rootha from the command zone onto the battlefield.
Activate Ashnod's Altar by sacrificing the Hellkite Courser token, adding {C}{C}.
Repeat from step 2.

Combos with "Zndrsplt's Judgment"