Beanstalk Control is a near-mirror running the same Trinisphere, Karn, the Great Creator, The One Ring, and Ugin, Eye of the Storms shell, so this comes down to sequencing and Karn tutor wars. Pithing Needle can be fetched to shut off a key land or Giant's Boulder's sacrifice ability at a critical moment. Mycosynth Lattice is a powerful finisher that also turns every permanent into an artifact, which synergizes with our own Urza's Workshop and Giant's Boulder mana abilities. Keep both copies of The One Ring and all Trinisphere copies since card advantage and taxing their fast mana wins these mirrors.