We made a separate mini-team (Matt Cavotta, Mark Gottlieb, Brandon Bozzi, and myself) to work on designing planeswalkers to be introduced on the futureshifted sheet of Future Sight , but the versions we ended up with were a bit too robotic
Most of this searching is done via "Reinforcement of the Army", "Last Will", "Witch of the Black Forest" and "Sangan", but occasionally Toolbox will utilize cards such as "Giant Rat", "Field-Commander Rahz" or "Mystic Tomato" due to the fact that a large majority of its cards may be tutorable by those monsters (including many non-warrior monsters which are seamlessly splashable in the Toolbox deck)
It provides that very familiar magic framework to build upon without being convoluted and complex
It's willing to pay any price to win, liberally spending life and sacrificing minions to gain the advantage, as well as directly destroying enemy creatures
That said, this seems to be a control deck