Activate "Fusion" to Fusion Summon "Mementomictlan Tecuhtlica - Creation King" by shuffling "Dark Blade", "Tatsunootoshigo" and "Mace" from the GY into the Deck
(Then planeswalk away from this phenomenon.) Diabolic Intentions Phenomenon When you encounter Diabolic Intentions, each player may search their library for a card, put it into their hand, then shuffles their lbirary
Try out a mirror match on a simulator or an old console game, and then build the deck
The card's original effect was straightforward and damning in its simplicity, allowing the player to "Tribute 1 monster to inflict damage to your opponent equal to its Level x 200"
Assembling Ragnarok is a built-in mini-quest, and successfully doing that at least once in a game I'd consider a victory
Cards like Cathars' Crusade place a +1/+1 counter on every creature you control whenever a new one arrives, turning your board into a terrifying army almost instantly