Meltdown [Urza's Saga] Merfolk Knight also your opponent cannot target

also your opponent cannot target "Gogogo" monsters on the field with card effects

Set: Speed Duel: Battle City Box Card type: Field Spell Rarity: Secret Rare When this card is activated: You can add 1 LIGHT Machine Union monster from your Deck to your hand

Set: Journey into Nyx Type: Legendary Artifact — Equipment Rarity: Mythic Cost: {1}{W}{W} Equipped creature gets +3/+3

Set: Structure Deck: The Dark Emperor Card type: Normal Trap Rarity: Common Discard 1 card

Meltdown [Urza's Saga] Merfolk Knight also your opponent cannot targetSet: Urza's Saga Type: Sorcery Rarity: Uncommon Cost: {X}{R} Destroy each artifact with mana value X or less. Catastrophes happened so often at the mana rig that the viashino language had a special word to describe them.