We'd stand in line outside the electronics section, sometimes for 30 minutes or more, where it was limited to one booster pack per person
While it only does 60 damage for three Energy, it can protect itself from your opponents next attack if you manage to land the coin flip correctly
Let's say you have a humble three-person free for all, your first attack gets you one additional copy of The Master, a second attack with both of those asks you what 22 is, giving you four more copies, and if your opponents can't handle that, it grows exponentially to be way more 4/3 bodies than you paid for
Unless you have some turned-face-up synergy in Rakdos that I dont know about, Arno is better off in the 99 of your Altar Ibn-La'Ahad deck
It differs from the other constructed formats in several ways