I'd love to boost Lilligant but I got stuck on the 3rd change after a quick speed boost and access to Fiery Dance. If anyone's got any ideas on how you could add to that I'm all ears.
As for what I'll contribute, I'll boost Heliolisk. Everyone knows that Dry Skin, Thunder, and Surf make him great in the rain, but I want to buff his Solar Power variant to be really viable as well.
Firstly let's give him Solar Beam. Honestly it's a bit confusing that a lizard that no doubt suns itself regularly, has access to Solar Power, and who's very frill is shaped like a child's rendition of the sun doesn't already have this move, but it'd be great for any Heliolisk on a sun team. Giving it the ability to use a grass type move rather than a water type one to hit ground types would be a godsend, and it would also help get past rock types that can switch in on your spammable Hyper Voice.
The second thing I want to do is give Heliolisk Heat Wave. When thinking about a fire type move to give our sun 'lisk there were three obvious choices: Fire Blast, Flamethrower, and Heat Wave. Of the three I chose Heat Wave not only because it's very unusual to find a pokemon that can learn Fire Blast but not Flamethrower, or vice versa, but also because Heat Wave is the only fire type move I can realistically see a Heliolisk using. Maybe that's because the primary inspiration for this pokemon is found in the Australian deserts, and I speak from experience when I say they are pretty damn hot.
The third one is gonna be a stat boost. Honestly with the newfound power that Heliolisk would pick up from Solar Power I don't think it needs a boost to its special attack so I'll put this one in speed, letting it jump up to a frighteningly fast 119.