Spellseeker [Commander Masters] Cat Shaman Set: The List Type: Enchantment

Set: The List Type: Enchantment Rarity: Mythic Cost: {2}{G} Whenever you cast a permanent spell with a mana cost that contains {X}

Supporting this hteory

it deals damage equal to its power to any target

Each artifact you tap after you're done activating mana abilities pays for {1}

Spellseeker [Commander Masters] Cat Shaman Set: The List Type: EnchantmentSet: Commander Masters Type: Creature Human Wizard Rarity: Mythic Cost: {2}{U} When Spellseeker enters the battlefield, you may search your library for an instant or sorcery card with converted mana cost 2 or less, reveal it, put it into your hand, then shuffle your library. Mages and warriors recruited from across Kylem display their skills at Valor's Reach.