Originally Posted by
b4r0n
Chalice comes in on the play when you fear Crypt. You'll also often see Ancient Grudges in the board for that purpose. Ray comes in when you fear Leyline. Leyline comes in against the mirror and against decks that have a way of sacrificing their creatures to remove your bridges. Chain of Vapor is a catch-all for permanent-based hate, and comes in for the mirror.
Against most decks, the Dread Return package comes out for answers to hate. When you need to keep it in (in order to race combo, for example), you can often do something like -2 Careful Study, -1 Thug, -1 Ichorid.