The Speed Demon The Speed Demon has risen in popularity in mono-black midrange Standard decks, where it rewards you for being aggressive
Correctly identifying what each die on an opponents creatures represented made this a resoundingly unfun experience, and Wizards has focused on only using +1/+1 or -1/-1 counters at any given time since then
Ardyn can exile cards from the graveyard to make big demon tokens, which gives Ardyn a powerful army to make to finally claim his throne
It also self-combos as you know, because it'll sacrifice a Forest or Plains for any land
Scar allows all Ally characters to get a +1 strength, and if Scar is exerted at the end of your turn, you could draw cards equal to the challenge strength of one of your Ally character cards, although you must discard two cards and banish that character
It wasnt Commander yet, but it was definitely a more social and less competitive style of play than Wizards was focused on when I joined the company in 2007