Argentum Armor

Twelve mana to make a deal: six to cast it, six again to bolt it onto a body. That total is the whole conversation, and it is why this Equipment lives in casual orbits rather than competitive ones. What you buy for the price is a guarantee, not a maybe: every swing kills a permanent of your choosing, any permanent, with no restriction on type, no sacrifice clause, no tapping condition beyond the attack itself. Land, creature, planeswalker, enchantment, the opposing equipment, it does not care. Notice that the destroy trigger fires on attack, before blockers and before damage, so a chump-blocked attacker still strips a permanent off the board each turn the equipped creature can crack in; the +6/+6 ends up secondary to that. That is the timing wrinkle worth holding onto: the value is front-loaded into the declare-attackers step, which means even a swing that accomplishes nothing in combat has already done its work. The design lineage here is the top-end Equipment that asks you to overpay for inevitability rather than tempo, the recurring "if you reach this much mana, the game ends on your terms" reward. The equip cost is the leash. Pay it once and the engine is brutal; the trouble is that any deck capable of spending six to cast it and six again to equip usually has cheaper, faster ways to win, which is exactly the bargain this card was built to test.