mtg card brick Mage Tech Deck Box for Commander - Patented Design, Commander Display, Fits 100 Double-Sleeved Cards, 35pt Card & Dice Tray Fired Bricks enters the battlefield Opening Up a Huge Brick

Exxaxl: Unspeakable poweeeeers

But Wizards of the Coast has begun to more Ghostly Prison and Propaganda effects in creature form, such as old-school Windborn Muse

With other complementary artifact mana sources like Thran Dynamo and Grim Monolith, decks could count on being able to get the kind of mana you'd need to justify packing the cards that would let you use the mana from Metalworker to deliver the knockout blow, and their presence lets you turn that Metalworker mana into permanent giant amounts of mana rather than just a one shot deal

Interrupts and mana sources were removed from the game and combined into instants during the famous Sixth Edition rules change back in 1999