This clever loop centers around the resurrection magic of Missy, which catches any nonartifact creature dying in your graveyard and instantly brings it back to the battlefield face down as a 2/2 Cyberman artifact creature. You feed a creature into Goblin Bombardment to convert its death into direct damage, and because Coral Trickster is a creature when it dies, Missy's trigger brings it right back into play. From there, you use Coral Trickster's own morph ability to turn it face up for a single blue mana, which triggers its ability to untap the very land or mana source you just used to pay for it. Repeating this loop yields an unstoppable engine of infinite damage, sacrifice triggers, and enter-the-battlefield effects to overwhelm the entire table.