Malcolm, Keen-Eyed Navigator, Niv-Mizzet, the Firemind, Quicksmith Genius, and Amoeboid Changeling

Prerequisites

• Malcolm, Keen-Eyed Navigator on the battlefield
• Niv-Mizzet, the Firemind on the battlefield
• Quicksmith Genius on the battlefield
• Amoeboid Changeling on the battlefield
• You have a way to draw a card
• Amoeboid Changeling does not have summoning sickness

Steps

1. Activate Amoeboid Changeling's first ability by tapping it, causing Niv-Mizzet to gain all creature types until end of turn
2. Draw a card
3. Niv-Mizzet triggers, dealing 1 damage to an opponent
4. Malcom triggers, creating a Treasure token
5. When the Treasure enters the battlefield, Quicksmith Genius triggers, causing you to loot
6. Repeat from step 3

Results

• Infinite draw triggers
• Infinite looting
• Infinite self-discard triggers
• Near-infinite colored mana
• Near-infinite damage
• Near-infinite Treasure tokens