Why the hell is Battlegrounds Galakrond lowest winrate hero? I've stayed away from him mostly, then tried him and he's incredible.
He's nearly as good as Toki, possibly better and you can cheat out Tier 5 minions on the 9 mana turn easy, turn that Hogger in the Tavern into a Kalegos or the poison giving Murloc into a Brann and if you get a Junkbot instead of Brann you will probably turn the Junkbot into a Pirate Ship or Ghastcoiler the next turn.
I suspect players are using the hero power severely wrong, although one thing to keep in mind is that they slightly buffed the hero power with the last patch.
He's not a bad hero and with this "highroll" meta, being able to dial up a Tier 4, 5, 6 early is incredibly useful.
You also have to only use his hero power at the right time, in a lot of cases you can't afford not to roll, so if you HP and it isn't worth it you've wasted a gold giving him negative gold production, but I would agree if you only do it while you're leveling etc then it's pretty good.
He is not as good as Toki, even though Toki is also kinda bad. He is very high risk, not that high reward hero. Reno is much much better. But i guess if you get really lucky with him, get a mama bear you can have a good game. Kalecgos is not as good as you think it is on Galakrond, cause by the time you will get some dragons and start building them with battlecries you will probably be dead. Mama bear is way better cause it will make you strong and be able to recover way faster.