Declare Ognis and five other creatures with haste as attackers.
Ognis triggers six times.
Resolve the first Ognis trigger, creating a tapped Treasure token.
The Treasure enters the battlefield, triggering Amulet of Vigor, untapping the Treasure.
Repeat from step 3 for each remaining trigger.
Move to your postcombat main phase.
Activate five Treasure tokens by tapping and sacrificing them, adding {3}{R}{R}.
Activate Aggravated Assault by paying {3}{R}{R}, untapping all creatures you control and causing you to get an additional combat and main phase after this one.
Repeat.

Infinite colored mana

Infinite combat phases

Infinite Treasure tokens

Ognis, the Dragon's Lash

Amulet of Vigor

Aggravated Assault

Declare five creatures you control with haste as attackers.
Ognis triggers five times, creating five tapped Treasure tokens.
Activate Time Sieve by tapping it and sacrificing the Treasures, causing you to take an extra turn after this one.
Repeat each turn.

Combos with "Ognis, the Dragon's Lash"