Helm of the Host attached to a creature with base power 7 or greater).
Notable Prerequisites
An opponent cannot block and kill
Hellkite Charger or
Fire Lord Ozai.
Steps
At the beginning of your combat phase,
Helm of the Host triggers, creating a token copy of the creature it is attached to.
Declare
Hellkite Charger and
Fire Lord Ozai as attackers, triggering their abilities.
Resolve the
Fire Lord Ozai trigger, causing you to sacrifice the token made in step 1 and add an amount of ({R} magic symbol) equal to the token's power.
Resolve the
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.