Unless that creature has trample, it won't deal combat damage
Terror of the Peaks is one such card, and the Extended Art version from Outlaws of Thunder Junction has been waiting for an opportunity like this to separate from the base OTJ version
I have to admit, while Ive had four Dungrove Elders since the card was printed last summer, Ive not really played with it much at all because, quite frankly, I love non-basic lands too much to mess with it
(I will note that I treat Thought Scour more like an enabler for Gurmag Angler than a cantrip.) Ive tried Sprite Dragon, Kroxa, Titan of Deaths Hunger, Dreadhorde Arcanist, and Young Pyromancer to try and bolster the roster of threats, and each has its own issues
When they enter, you get to pick a creature type
Creatures are the primary way you reduce your opponents life total to zero, as they can stay on the battlefield and deal damage for multiple turns