Somberwald Sage, Chakram Retriever, and Kor Skyfisher

Prerequisites

• Somberwald Sage on the battlefield
• Chakram Retriever on the battlefield
• Kor Skyfisher in hand

Steps

1. Activate Somberwald Sage by tapping it, adding Cast Kor Skyfisher by paying its mana cost
2. Chakram Retriever triggers, untapping Somberwald Sage
3. When Kor Skyfisher enters the battlefield, it triggers, returning it from the battlefield to your hand
4. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count
• Infinite colored mana that can only be spent to cast creature spells