Rattleclaw Mystic, Ixidron, Deadeye Navigator, Training Grounds, and Croaking Counterpart

Prerequisites

• Rattleclaw Mystic on the battlefield
• Ixidron on the battlefield
• Deadeye Navigator on the battlefield
• Training Grounds on the battlefield
• Croaking Counterpart in hand
• available

Steps

1. Cast Croaking Counterpart by paying , creating a token copy of Deadeye Navigator that is a 1/1 green Frog
2. The Deadeye Navigator token enters the battlefield, triggering its soulbond ability, pairing it and Ixidron
3. Activate Ixidron by paying , blinking it
4. All other nontoken creatures you control are turned face-down as Ixidron enters the battlefield
5. Ixidron enters the battlefield, triggering the token Deadeye Navigator's soulbond ability, repairing Ixidron and the token Deadeye Navigator
6. Activate Rattleclaw Mystic's morph ability by paying , turning it face up
7. Rattleclaw Mystic triggers, adding
8. Repeat from step 3

Results

• Infinite ETB
• Infinite green mana
• Infinite LTB
• Infinite red mana