Opponents control at least six artifacts and/or enchantments.
Sword of Hearth and Home attached to another creature you control that can attack this turn, and that cannot be blocked by an opponent.
Steps
Deal combat damage to an opponent using Sword of Hearth and Home.
Sword of Hearth and Home triggers, causing you to exile Dockside Extortionist, search your library for a basic land card, and put both cards onto the battlefield.
Dockside Extortionist enters the battlefield, 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) , untapping all creatures you control and causing you to get an additional combat and main phase after this one.
Repeat.
Results
Infinite colored mana.
Infinite combat damage.
Infinite combat phases.
Infinite ETB.
Infinite LTB.
Infinite mana creatures you control can produce.
Infinite Treasure tokens.
Infinite untap of creatures you control.
Near-infinite landfall triggers.
Put all basic lands from your library onto the battlefield.