Knollspine Invocation Tweet Near Mint, 1 In stock $0.50 Excellent, 1 In stock $0.40 Details Artist: Dave Dorman Card Number: 99/301 Card Text: X, Discard a card with converted mana cost X Knollspine Invocation deals X damage to target creature or player. Card Type: Enchantment Color: Red Cost: 1RR Finish: Regular Name: Knollspine Invocation Rarity: R Set Name: Shadowmoor