Prince of Darkness Hammer
A variant of Hammer coral (Euphyllia ancora)

Photo: Diego Delso · CC BY-SA 4.0
Representative Hammer coral image. A confirmed image of this exact morph isn't available yet.
A dark branching hammer with purple to black stems. Neon blue edges and a pale gold centre give it strong contrast.
Other LPS Corals variants
Gold HammerToxic Green HammerGreen Hammer (Wall)Branching HammerGold Torch / 24K HammerOrange HammerBranching Green HammerWall (Octopus) Green HammerRainbow Branching HammerSplatter Branching HammerGolden Splatter Branching HammerNeon Splatter Branching HammerHoly Grail HammerIndo Gold Branching HammerAussie Gold HammerGold Wall HammerCornbred Dreamsicle HammerGold Rainbow Mint HammerGolden OctospawnRainbow OctospawnGold Tip FrogspawnHologram HammerPurple Tip HammerSupernova HammerDark Matter HammerTeal Branching HammerFrammerAussie Teal Tip FrammerPurple & Peach FrammerIndo Purple FrammerBlacktip Hammer