Molten Echoes | Lightning Crafter

Cards

Cast
Lightning Crafter by paying its mana cost.
When
Lightning Crafter enters the battlefield, its champion ability and
Molten Echoes triggers.
Resolve the
Molten Echoes trigger, creating a token copy of
Lightning Crafter with haste.
When the
Lightning Crafter token enters the battlefiled, its champion ability triggers, exiling the nontoken
Lightning Crafter until the token
Lightning Crafter leaves the battlefield.
Holding priority, activate the
Lightning Crafter token by tapping it, dealing 3 damage to any target.
Resolve the champion ability from step 2, exiling the token
Lightning Crafter.
The token
Lightning Crafter leaves the battlefield, returning the nontoken
Lightning Crafter from exile to the battlefield.
Repeat from step 2.