Ideally, we would remove some of the fringe mechanics like Myriad and Vanishing, but it's good to know what they do, and the cards that utilize them are fairly straightforward
Morcant itself could be one of the elves to tap, and it could be any of your other elves
Saga creatures act the same way as Sagas do, when they enter the battlefield, the player adds a single lore counter, granting an immediate effect, after a certain count, the Saga goes away
Creeping Bloodsucker I was unimpressed when I first saw Creeping Bloodsucker but this black vampire quickly exceeded expectations
Well, just as Cats were tied to Equipment, Wizards were tied to instants and sorceries
My favorite of these are oldschool commanders that have horrible weaknesses that you can turn into their greatest strengths: one of my very first decks, Karona, False God, is exactly this, where her downside of being passed around the table becomes a huge upside when I toss a Shiny Impetus on her and watch my opponents be forced to murder each other with her