non creatures i would run: Lifecrafter's Bestiary, Skullclamp, Return of the Wildspeaker, Inspiring Call, Harmonize, Rishkar's Expertise maybe a few things like Fade from History, Beast Within, Nature's Claim, Collector Ouphe is also really strong since you will be running creatures Sure, the mana doubling can be fun, but is it really needed
This isn't as bad as it sounds either, as players will want to begin to accumulate energy onto the Aggron V to prepare them for Aggron VMAX's attack which costs a total of five energy--two steel and three colorless
The best use of Blood tokens in the build will undoubtedly be for value or with Marionette Master, but dont be afraid to use them as combat tricks with Strefan Drana and Zagras can both make combat a nightmare
Or if you have blue, Kindred Discovery and Intruder Alarm make this go arbitrarily large if you have any mana dorks