Declare Burakos and Hellkite Charger as attackers, triggering their abilities.
Resolve the Burakos trigger, creating eight Treasure artifact tokens and causing the defending opponent to lose 4 life.
Activate seven Treasure tokens by tapping and sacrificing them, adding 5.
Resolve the Hellkite Charger trigger, causing you to pay 5 to untap all attacking creatures and to get an additional combat phase after this one.
Repeat each combat phase.
This explosive combat loop relies on Burakos, Party Leader to fuel Hellkite Charger's extra-combat requirement entirely on its own. With a full party of four, Burakos naturally produces four Treasures per attack, but Adrix and Nev, Twincasters steps in to double that output into eight artifacts each time. Sacrificing just seven of those newly minted Treasures generates the exact {5}{R}{R} mana needed to pay for Hellkite Charger's untap ability, leaving you with infinite combat phases, endless life loss for your opponents, and an ever-growing horde of tokens.