The only deck that doesnt want Up the Beanstalk is an Elfball like build which may not be running many spells with mana value 5 or greater
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The main reason you want to be playing with this green creature is to cheat it out early, then cast something like Neoform to bring out something even bigger
Giving all your Dinosaur spells an alternate casting cost of two generic and one red lets you sneak in some early damage with a small Dinosaur, only to turn around a drop a seven or eight mana one, possibly as early as turn three
For noncreature Stax, you've got Chalice of the Void, Cursed Totem, Thorn of Amethyst, Deafening Silence, Grafdigger's Cage (which your Commander's ability gets around btw, very strong here), & Rule of Law as a few solid options