Because Ice Block stacks, really no character is safe anymore from these deadly cards
The treefolk conducting the ritual died so that she might live, while cruel fae attacked her, hoping to hijack the power of the ritual for their own ends
Surprisingly, this precon features almost no countermagic, and while I commend that, you need some sort of stack interaction
If this ability targets another creature than the one with backup, the targeted creature also gets the ability printed below backup until end of turn
However, you'll also need some kind of card draw if you require any new cards that aren't Timestream Navigator
All the usual mono-black suspects fit in here, from Entomb and Demonic Tutor, to Stinkweed Imp, to Reanimate, to Cabal Coffers