Flat green makes it look like a plastic toy
SR Super Rare UR Ultra Rare SE Secret Rare UL Ultimate Rare PS Platinum Secret Rare CR COLLECTOR'S RARE QCSE Quarter Century Secret Rare Utopic Onomatopoeia X LIGHT Level 4 [ WarriorEffect ] ATK 1500 DEF 1500 (This card is always treated as a "Zubaba", "Gagaga", "Gogogo", and "Dododo" card.) During your Main Phase: You can Special Summon up to 1 each "Zubaba", "Gagaga", "Gogogo", and/or "Dododo" monster(s) from your hand in Defense Position, except "Utopic Onomatopoeia", also you cannot Special Summon from the Extra Deck for the rest of this turn, except Xyz Monsters
While that balance has shifted over the years (along with plenty of other archetype-defining cards that have come and gone), Mana Drain continues to find ways to make control viable, despite how intense of competition it faces
Consider older ex cards if you like vintage-era scarcity
Rhystic Study aside, this is probably blues most infamous Game Changer for Commander
