The Might deck suffers from what many of the aggro Duel Decks do: it takes way too long to get going without a sufficient number of 1- and 2-drops
I trust that you dont need a reminder to stay away from the yellow snow
A few other payoffs for this strategy include Ashiok, Wicked Manipulator and Ashiok, Nightmare Muse for additional finishers
While not necessarily a deck-defining card, shes a crazy good 4-drop that can help you gain a lot of advantage in both mid and late game
If a card requires you to discard your entire hand and draw new cards (such as Windfall), Psychosis Crawler will not die since state-based actions aren't checked until the spell finishes resolving, and you'll have a hand of cards once it does, keeping Psychosis Crawler alive
And our last cut is one Swamp, to make way for Exotic OrchardExotic Orchard