Head Slam Tweet Out of stock. Wishlist Details Rarity: Uncommon Set: Onyxia's Lair Cost: 2 Card Text: As an additional cost to play Head Slam, put up to 5 damage on Onyxia. Onyxia deals that amount of melee damage to each opposing ally. Card Type: Ability Name: Head Slam Illustrator: Mauro Cascioli Finish: Regular Manufacturer: Upper Deck Entertainment Card Number: OL-17
