Cast Thermal Flux by paying {U}, causing Strionic Resonator to become a snow permanent until end of turn.
Move to your combat phase, and declare Jorn as an attacker, triggering its ability.
Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least {3}.
Activate Strionic Resonator by paying {2} and tapping it, copying Jorn's triggered ability.
Resolve the copy of Jorn's ability, untapping all snow permanents you control.
Repeat from step 3.

Infinite mana snow permanents you control can produce

Infinite untap of snow permanents you control

Jorn, God of Winter // Kaldring, the Rimestaff

Thermal Flux

Strionic Resonator

Cast Thermal Flux by paying {U}, causing Lithoform Engine to become a snow permanent until end of turn.
Move to your combat phase, and declare Jorn as an attacker, triggering its ability.
Holding priority, activate all mana producing snow permanents you control by tapping them, adding at least {3}.
Activate Lithoform Engine's first ability by paying {2} and tapping it, copying Jorn's triggered ability.
Resolve the copy of Jorn's ability, untapping all snow permanents you control.
Repeat from step 3.

Lithoform Engine

Cast Thermal Flux for {U} targeting Kiki-Jiki, making it a snow permanent.
Tap Kiki-Jiki to make a token copy of Rime Tender with haste.
Tap the Rime Tender token to untap Kiki-Jiki.
Repeat for infinite ETB and tapped creature tokens with haste.

Infinite death triggers

Infinite ETB

Infinite LTB

Infinite sacrifice triggers

Infinite tapped creature tokens with haste

Kiki-Jiki, Mirror Breaker

Rime Tender

Cast Thermal Flux for {U} targeting Kiki-Jiki, making it a snow permanent.
Tap Kiki-Jiki to make a token copy of Rime Tender with haste.
Tap the Rime Tender token to untap Kiki-Jiki.
Repeat for infinite ETB and tapped creature tokens with haste.
Cast To Arms! for {1}{W} to untap your infinite tapped creature tokens.
Move to combat and attack for lethal damage.

Combos with "Thermal Flux"