Synod Artificer, Hazel's Brewmaster, and Astral Cornucopia

Prerequisites

• Synod Artificer in exile
• Hazel's Brewmaster on the battlefield
• Astral Cornucopia on the battlefield
• Astral Cornucopia has at least three charge counters on it
• You control a Food

Steps

1. Activate Astral Cornucopia by tapping it, adding at least three mana of any color
2. Activate a Food using Synod Artificer's second ability by paying and tapping it, untapping the Food and Astral Cornucopia
3. Repeat

Results

• Infinite untap of noncreature artifacts you control
• Infinite mana noncreature artifacts you control can produce