You should be able to recognize them instantly based on the typeface, colors, and art style
Turning a land into a real threat is powerful
Mana does not accumulate from round to round, however
Living End is a combo deck centered around the namesake card, Cascade cards like Violent Outburst that consistently cast Living End, and large Creatures with Cycling
Not a broken five color commander like Jodah the Unifier then, but a solid commander for an Ally typal deck - if only the Ally card pool was deep enough to make that viable
Then, in the very next Draft playtest, Ian Duke managed to build a slow green-black graveyard deck that melded them not once, not twice, but three times over the course of the playtest