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To keep this list focused on the absolute best of the best, I pick out only the most universally powerful artifacts from smaller subsets of cards

In this scenario, Reckless Greed will stop you from losing by deck out (not being able to draw because you ran out of cards in your deck), and allow you to use a turn to attack an opponent's monster with Royal Magical Library (who will always be destroyed unless it attacks another 0 ATK monster), sending itself and Broken Bamboo Sword to reach 31 cards, letting you use your 3 copies of Blasting the Ruins to win

First, activated abilities

SR Super Rare Magistus Theurgy X SPELL Quick-Play Target 1 "Magistus" monster you control

However, a similar card like Snapcaster Mage might be considered better due to its flexibility in instant-speed casting and potential for additional value