Molten Echoes + Changeling Titan

Prerequisites

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Steps

1. 1Cast Changeling Titan by paying its mana cost.
2. 2When Changeling Titan enters the battlefield, its champion ability and Molten Echoes triggers.
3. 3Resolve the Molten Echoes trigger, creating a token copy of Changeling Titan with haste.
4. 4When the Changeling Titan token enters the battlefiled, its champion ability triggers, exiling the nontoken Changeling Titan until the token Changeling Titan leaves the battlefield.
5. 5Resolve the champion ability from step 2, exiling the token Changeling Titan.
6. 6The token Changeling Titan leaves the battlefield, returning the nontoken Changeling Titan from exile to the battlefield.
7. 7Repeat from step 2.

Effects

• Infinite ETB
• Infinite LTB