Its technically three abilities, which are 1) You may cast the half of this card that has Aftermath from the graveyard, 2) You may ONLY cast the half of this card that has Aftermath from the graveyard, and 3) if this spell was cast from the graveyard, exile it if it would leave the stack for any reason
Sort of fun in a chaotic way, but not good
The entire thing feels very juicy, from the spinning around of a bunch of the same packs to the swiping to rip off the top
During the Beginning phase, players ready their cards, any effects in play that begin at the start of a turn take effect, and players draw a card from their deck
Blowing up one nonblack creature, then immediately blowing up another without expending any mana keeps our mana pool fresh so we can continue to flashback more and more destruction from our graveyard