Final Fantasy, the long-running RPG video game franchise, is the next property to get the Magic treatment (dont confuse this with the preexisting Final Fantasy TCG!)
A lot of popular commanders have unique abilities that players build around, turning them into combo pieces or creating a deck that relies on having them in play
There are almost 40 different planeswalkers, many at uncommon, so you get some really powerful cards with a box of boosters
(Well, unless you're playing the excellent Fire // Ice, of course.) Aftermath, on the other hand, always gives you that wonderfully useful extra card
Its passive ability, which puts a +1/+1 counter on a creature each time you gain life, is an easy way to combo off with cards like Walking Ballista