On their own, the bits of damage provided by each would be of minimal impact, but when doubled up with Solphim, combined with a staggeringly low opportunity cost, they're far more potent than they appear at first glance
Black Auras for MTG serve a similar card-advantage role in black-heavy combo and control builds
The (since retracted) cut to Platinum pros may not seem like something that affects most of us and for the most part its not but the community has stood together on this and come out with a very strong reaction
The Mana Base Nonbasic lands and mana fixing are another facet that you should consider
Comment below if you have any questions, and I'll get back to you.
The type of Basic Energy generated by the Energy Zone may be selected during deck customization, with a minimum of 1 Basic Energy type (meaning Colorless Energy can only be generated through other means) and a maximum of 3