Aggravated Assault and Old Gnawbone on the battlefield.
You control creatures that can deal at least six combat damage that cannot be blocked by an opponent.
Steps
Attack with the creatures to deal at least six combat damage to a player, triggering Old Gnawbone's ability, creating at least six Treasure tokens.
Activate five Treasure tokens by tapping and sacrificing them, to add ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) .
Activate Aggravated Assault by paying ({3} magic symbol) ({R} magic symbol) ({R} magic symbol) to untap all creatures you control and to get an additional combat phase and an additional main phase after that.