Great idea!
Just remove all the OP cards: Decomposer, FoF, Cultist Master, Shrine of War, The Incredible Mo, Wheel of Gifts, Mine, Eruption, Surge of Light, Regrowth, LSS, Unholy Hero, Giant Wyrm, Green Peace, Oink, Frenetic, Infect, Thunderstorm, Equilibrium, Bloodhorn, Batariel, Enlightenment, Life Weaving, Mark of the Keeper, Mana Wing, Fallen Skyelf, Amii Monument, Mutating Frenzy, Nether Warp, Ice Barrier and all the buildings in the game since you can block with them in speedruns.. and you will end up playing with 5 cards. Go ahead and remove everything.
Removing cards w