Sage of the Maze, and Pemmin's Aura

Prerequisites

• Sage of the Maze on the battlefield
• Pemmin's Aura on the battlefield
• Sage of the Maze does not have summoning sickness

Steps

1. Activate Sage of the Maze's first ability by tapping it, adding and one mana of any color
2. Activate Pemmin's Aura's first ability by paying , untapping Sage of the Maze
3. Repeat

Results

• Infinite colored mana