MTG Salvation

Not to mention that you can play it at the end of their turn with Torrential Gearhulk.

According to the rules, if you can target either half with something like the Gearhulk, you can cast either side of it with it too.

As a side note, Aftermath cards with both Instant and Sorcery on them count as two types for Delirium, interestingly enough!

It could be fun with Awoken Horror in an UR Instant/Sorcery deck however...

I'd think of it more like a tuck with an emergency restock sitting in the grave when you need an answer or a finisher. You'd use Memory as a comeback in a control mirror, rather than extra gas to close out the game.