Ioreth of the Healing House, Leyline of Singularity, and Kiora's Follower

Prerequisites

• Ioreth of the Healing House on the battlefield
• Leyline of Singularity on the battlefield
• Kiora's Follower on the battlefield
• Kiora's Follower and Ioreth of the Healing House do not have summoning sickness
• You control at least one additional creature

Steps

1. Activate Ioreth's second ability by tapping it, untapping Kiora's Follower and any other creature you control
2. Activate Kiora's Follower by tapping it, untapping Ioreth
3. Repeat

Results

• Infinite mana creatures you control can produce
• Infinite untap of creatures you control