Agatha's Soul Cauldron, King Macar, the Gold-Cursed, and Forensic Researcher

Prerequisites

• Agatha's Soul Cauldron on the battlefield
• King Macar, the Gold-Cursed on the battlefield
• Forensic Researcher in exile

Steps

1. Activate King Macar using Forensic Researcher's ability by tapping it, untapping another creature you control that has a +1/+1 counter on it
2. Activate the other creature using Forensic Researcher's ability by tapping it, untapping King Macar King Macar triggers, allowing you to exile a creature and create a Gold token if you do
3. Repeat

Results

• Exile all creatures opponents control
• Near-infinite Gold tokens
• Near-infinite artifact ETB
• Near-infinite artifact LTB
• Near-infinite artifact sacrifice triggers
• Near-infinite colored mana