Hellkite Charger as attackers, attacking an opponent who controls seven or more artifacts.
Hellkite Charger triggers, causing you to pay ({5} magic symbol) ({R} magic symbol) ({R} magic symbol) to untap all attacking creatures and to get an additional combat phase after this one.
Deal combat damage using
Hoard Hauler.
Hoard Hauler triggers, creating at least seven Treasure artifact tokens.
Move to your next combat phase.
Declare
Hoard Hauler and
Hellkite Charger as attackers, attacking an opponent who controls seven or more artifacts.
Hellkite Charger trigger, causing you to pay ({5} magic symbol) ({R} magic symbol) ({R} magic symbol) to untap all attacking creatures and to get an additional combat phase after this one.
Repeat from step 3.
If the opponent controls eight or more artifacts, this combo nets infinite Treasure tokens.