One Piece TCG: Awakening of the New Era Booster Box [OP 05] 24 Packs Shopville What does x mana cost mean on a card? One Piece OP 05 Awakening of a New Era Booster Box Anime TCG.net With Affinity for Artifacts, the cost of this spell is reduced by 1 for every artifact you control. Between your mana producing Myr, your artifact lands, and Urtets tokens, you will almost always Power Artifact on Grim Monolith or Basalt Monolith makes infinite mana! , That's the way to cast powerful colorless creatures like Emrakul the Aeons Torn right away! But there's more: Show and Tell