It was the primary mechanic for elementals in Lorwyn and returned in Morningtide
The gameplay is straightforward enough for newer Commander players to learn, but the deck rewards thoughtful sequencing and deck customization over time
While Jafars stats are average, that 3 lore can compound pretty fast.To twist the knife further, each time this character quests for lore, he lets his controller cycle through their deck
While very conditional, lets not ignore the fact that some of the best spells in the game (never mind just the formats these two are legal in) make appearances in the maindecks and sideboards of red decks from Pauper to Commander to Legacy and Vintage
Those are all reprinted in the 2020 Commander precon decks, but there are still a ton of new legendary creatures coming out in Ikoria boosters and precons
Also, this aura offers a huge buff to a creature, if you're interested in the mechanics, of course, and not just in how very cool the artwork is