I’m glad you folks are realizing her potential. I was actually worried her ultimate might be a bit too strong (in PvP, it can one-shot people pretty strongly but it does require setup) but after testing it seems to make sense.
And now that Dovin Baan, C2 and N2 are out, I can share a bit the philosophy behind their design, the energy/overload relationship and their design themes.
These 3 Planeswalkers were designed to be a rock/paper/scissors type of deal, with Energy as the central mechanic. Basically, this is what it’s meant to look like:
Dovin Baan: Energy generation/Overload (the most straightforward one)
Chandra: Energy removal/destruction
Nissa: Energy scaling
With this, the goal is as such: Dovin Baan beats Chandra who beats Nissa who beats Dovin Baan.
Dovin Baan is strong against Chandra because while she can remove energy efficiently, he is self-sufficient and will always put out more than needs to survive, but is weak against Nissa because since she scales with Energy, she will easily dispatch him as he generates a lot of it.
Chandra is strong against Nissa because she actively works to REMOVE the energy that Nissa works to put on the board. All 3 of her abilities are designed around removing Energy (although the first one will also put some out to ensure that she can fuel herself). Building a low-cost deck with her (and with red that’s not necessarily too hard) lets you effectively remove Energy, keeping Nissa in check. She is weaker to Dovin Baan since he doesn’t scale with energy, he just needs a bit to be able to survive and use his stronger abilities.
Nissa is strong against Dovin Baan because she scales ridiculously strongly with Energy, making her a force to be reckoned with. With Dovin Baan’s huge energy generation potential, all Nissa needs to do is build up her third, get 3 creatures on the board and she wins. However, against Chandra, it’s a much more uphill battle, as Chandra will actively remove the Energy Nissa feeds off of, severely weakening her.
That’s the design intent behind these three Planeswalkers. The execution might be a bit off (especially in Chandra’s case) but that’s the idea.