Basalt Monolith [Foreign Black Border] Dragon's Maze Prerelease Promos Set: Mattel Action Figure Promos:

Set: Mattel Action Figure Promos: Series 2 Card type: Fusion/Effect Monster Rarity: Rare Attack: 2600 Defense: 2300 "Elemental Hero Wildheart" + "Elemental Hero Bladedge" This monster cannot be Special Summoned except by Fusion Summon

add 1 Level 4 or lower Sea Serpent monster from your Deck to your hand

or "The Wicked Eraser"

Set: Guilds of Ravnica Guild Kit Type: Legendary Creature — Vampire Assassin Rarity: Rare Cost: {2}{U}{B} Etrata

Basalt Monolith [Foreign Black Border] Dragon's Maze Prerelease Promos Set: Mattel Action Figure Promos:Set: Foreign Black Border Type: Artifact Rarity: Uncommon Cost: {3} Basalt Monolith doesn't untap during your untap step. {T}: Add {C}{C}{C}. {3}: Untap Basalt Monolith.