There are some concepts, which were selected and some which weren't. One of these less lucky were Undead Trees.
For Michalivan it's best bet to check them over DeviantArt, albeit he's having profile at ArtStation too.
Inferno Juggernaut, Inferno Maniac, Inferno Breeder, Centaur, Sanctuary Hero, Haven Hero,
Undead Trees, Inferno Town, Demon :D
Sarah, Lamasu, Scorpicore, Watcher
Just browse for more, there are here.
And there were move to tasting Heroes VII, famous Warden concept by m0zch0ps. That's for next time though.
