Because you can cheaply cycle a ton of creatures and then bring them all back at once with Living End
A drop that includes three board wipes in Day of Judgment, Star of Extinction, and Toxic Deluge would already be frightening, but adding in an extra turn spell in Temporal Extortion, and a way to exile key cards from your opponents' decks with Praetor's Grasp makes this by far the meanest Secret Lair drop we've ever seen
Aftermath = Flashback A lot of different terms have been bandied around to describe aftermath, with "fuseback" being my favorite, since it captures both the split-card and "cast from the graveyard" elements of the cards, but most of these terms are not correct in terms of how the cards actually play
Once it turns into Voracious Reader, it reduces the cost of all your instant and sorcery spells while also making itself a more than decent attacker
Maybe imprint a Draco and swing for lethal commander damage
There are just so many potential commanders to choose from
