At the beginning of your combat phase, Helm of the Host triggers, creating a nonlegendary token copy of Ganax with haste.
The Ganax token enters the battlefield, triggering each Ganax you control, creating that many Treasure tokens.
Move to your postcombat main phase.
Activate all Treasure tokens you control by tapping and sacrificing them, adding at least ({R} magic symbol) ({R} magic symbol) .
Activate Aggravated Assault by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) , causing you to untap all creatures you control and to get an additional combat and main phase after this one.