It picks up +1/+1 counters pretty much for free, transforms into a huge lifelinker on a whim, and is impossible to kill once it does
Never have been, and yet The Infamous Cruelclaw makes me look at my pile of Rakdos bulk and question if I can accomplish the impossible (for me)
Any party can be made up of a cleric, rogue, warrior and wizard
Kodama of the East tree is a spicy pick here
This can potentially provide a massive swing in power, giving you the best nonland cards in every player's deck
Notably, those decks don't even have to be dragon-based to get serious value from Two-Headed Hellkite, since any deck would benefit from having a huge flying beater that draws cards generously