Waves of Aggression, Forsaken Monument, Chromatic Orrery, Weathered Wayfarer, and Karn, the Great Creator

Prerequisites

• Waves of Aggression in the graveyard
• Forsaken Monument on the battlefield
• Chromatic Orrery on the battlefield
• Weathered Wayfarer on the battlefield
• Karn, the Great Creator on the battlefield
• Weathered Wayfarer and Chromatic Orrery do not have summoning sickness
• An opponent controls more lands than you

Steps

1. Activate Karn's first loyalty ability by putting a loyalty counter on it, causing Chromatic Orrery to become an artifact creature until end of turn
2. Activate Chromatic Orrery's first ability by tapping it, adding
3. Forsaken Monument's first ability triggers, adding
4. Activate Weathered Wayfarer by paying and tapping it, causing you to search your library for a land card and put it into your hand
5. Cast Waves of Agression from your graveyard for its retrace cost by paying and discarding a land card, untapping all creatures you control and causing you to get an additional combat phase and main phase after this one
6. Repeat from step 2
7. You may optionally proceed to the additional combat and main phase, and then repeat to untap your creatures before each combat phase occurs

Results

• Near-infinite combat phases
• Near-infinite magecraft triggers
• Near-infinite self-discard triggers
• Near-infinite storm count
• Near-infinite untap of creatures you control
• Near-infinite mana creatures you control can produce