Ardent Electromancer enters the battlefield, it and
Intruder Alarm trigger.
Resolve the
Ardent Electromancer trigger, adding at least ({R} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Resolve the
Intruder Alarm trigger, untapping all creatures.
Activate
Tradewind Rider by tapping it,
Ardent Electromancer and one other creature you control, returning
Ardent Electromancer from the battlefield to your hand.
Repeat.
Notes
If you control creature(s) that can tap to produce mana, you can use that mana to pay for the creature and instead gain mana from the creature's ETB ability.
Results
Infinite LTB.
Infinite ETB.
Infinite storm count.
Infinite red mana.
Infinite untap of creatures you control.
Infinite mana creatures you control can produce.
Metadata
In 0 decks according to EDHREC.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).