Magar of the Magic Strings | Brass's Bounty | Aggravated Assault

Cards

Activate
Magar by paying ({1} magic symbol) ({B} magic symbol) ({R} magic symbol) , noting
Brass's Bounty and putting it face down as a 3/3 creature.
On any other turn, deal combat damage to an opponent with the face down creature.
The face down creature triggers, causing you to cast a copy of
Brass's Bounty without paying its mana cost.
Resolve the copy of
Brass's Bounty, creating at least six Treasure tokens.
Move to your postcombat main phase.
Activate five Treasure tokens by tapping and sacrificing them, adding ({3} magic symbol) ({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 get an additional combat and main phase after this one.
Repeat from step 2.