Malcolm, Keen-Eyed Navigator, Pemmin's Aura, Embraal Gear-Smasher, and Amoeboid Changeling

Prerequisites

• Malcolm, Keen-Eyed Navigator on the battlefield
• Pemmin's Aura on the battlefield
• Embraal Gear-Smasher on the battlefield
• Amoeboid Changeling on the battlefield
• You control at least one artifact
• Pemmin's Aura attached to Embraal Gear-Smasher
• Amoeboid Changeling and Embraal Gear-Smasher do not have summoning sickness

Steps

1. Activate Amoeboid Changeling's first ability by tapping it, causing Embraal Gear-Smasher to gain all creature types until end of turn
2. Activate Embraal Gear-Smasher by tapping it and sacrificing an artifact, dealing 2 damage to each opponent
3. Malcolm triggers, creating a Treasure artifact token for each opponent dealt damage by Embraal Gear-Smasher
4. Activate a Treasure by tapping and sacrificing it, adding
5. Activate Pemmin's Aura's first ability by paying , untapping Embraal Gear-Smasher
6. Repeat from step 2

Results

• Infinite damage
• Near-infinite colored mana
• Near-infinite Treasure tokens