It swings its eye patterned pincers up to scare its foes. This makes it look like it has three heads.
This card was included in the Neo Discovery expansion as both a Holofoil and Non Holofoil card, first released in the Japanese Crossing the Ruins... expansion as a Holofoil card. In the Japanese release, Double Claw's effect do a base 20 damage, with the results of the coin flips adding more damage. This effect was altered in the English release, removing the base 20 damage so that the damage determined by the coin flips become multiplied rather than added. However, the card still displays 20+ instead of 20×.