yugioh macro cosmos deck speed duel secret rare Macro Cosmos - Structure Deck:

When you do that, the Summoning Station will trigger 3 times, giving you 3 untaps

Plus, this card can be cast as early as Turn 3 with Urzas Mine, Tower, and Power Plant in play

It had the card Firebreathing tacked on for free, and it hit hard, often ending games in one attack

Once you play eight discard spells, it is actually a strong card against decks like Azorius Control or mostly any kind of combo deck that isnt attacking our life total

While it can still be used offensively as a 2500 ATK beatstick, it will automatically destroy itself via its own effect if the opponent targets it for an attack, regardless of the ATK of the attacking monster

For three mana, this effect needs a ton of support to be worth it