Sorta wished it came with no weakness, similar to the video game. That wouldn't be too much to ask for ;/
Anyways, the most redeeming quality of this card is its middle stage. Though the Stage 1 is arguably better played without Elektross but instead with a different attackers, Elektross isn't too bad. Even with another attacker, it's great in a pinch and has some decent HP. Alone, it definitely allows you to play a thicker line, and fit more cards in. Its attacks aren't bad given that they can be quickly accelerated, but fall short of any decent KO's. Lightning typing is cool for Yanmega, but Donphan can cause problems due to resistance. Retreat is horrible. Weakness is bad too, but a plausible solution is Leavanny since you can probably get an energy anywhere on the board with Elektross' Stage 1, thus negating all weaknesses.
A fun card to say the least, was gonna try it with Leavanny/Torandus/Thunderus. But again, the strength is with the middle stage, and you'll probably only see this card in competitive play if someone is capitalizing on that.
6/10