Magda, Brazen Outlaw, Xenograft, and Aphetto Alchemist

Prerequisites

• Magda, Brazen Outlaw on the battlefield
• Xenograft on the battlefield
• Aphetto Alchemist on the battlefield
• Aphetto Alchemist does not have summoning sickness
• Xenograft on the battlefield with "Dwarf" chosen

Steps

1. Activate Aphetto Alchemist by tapping it, targeting itself
2. Magda triggers, creating a Treasure token
3. Resolve the Aphetto Alchemist ability, untapping it
4. Repeat

Results

• Infinite colored mana
• Infinite Treasure tokens
• Put all Dragon and artifact cards from your library onto the battlefield