Here is one of the teased cards with five creature types. It can fill any role in your party (but doesn't automatically fill your whole party)

By MaRo's article, green is the only color that gets all four party types. I wonder if that means all three of the 5-creature-type cards MaRo mentioned will be green, or if the other two will be exceptions to the rule.

It would be cool if one was an artifact creature, but not sure what the flavor would be

Maybe something simple like

Name
Artifact Creature - Golem
PartyChangeling
2/2

I dunno, can't wait to see

Am the only one who thinks this is too strictly better than a Bear? +1/+0 AND a kicker ability?

Bears are no longer the baseline for green. Vanilla 3/2 Terrain Elemental is common

Green does get slightly better than Bears now, but I agree that this feels a little too pushed for me. That said, Destiny Spinner didn't turn out as backbreaking as I thought it would.

Five mana to draw one card