Cataclysm Cataclysm requires you to control a card capable of winning the game, such as Blightsteel Colossus
Ragavan, Nimble Pilferer Ragavan, Nimble Pilferer has become a red staple for good reason
This card is an obvious reference to Mishras Workshop from Antiquities
On creature-heavy decks you should run fewer board wipes because you dont want to clear your own board too often (about 2-3 seem enough, unless they are one-sided where you can add more without hurting your own strategy) while on creature-light decks you need more (about 4-5 is a good number)
Making Declaration in Stone an instant is certainly powerful, and strong enough that the exile was downgraded to destroy
Many builds of the Amethyst/Emerald Lever Tempo deck are some of Disney Lorcanas most affordable tournament strategies, which has created a high demand for all of the decks newest additions, with Wrong Lever