The sacrifice portion could trigger things like Cruel Celebrant in B/W and be used to discard reanimation targets into the graveyard to bring back with Goryo's Vengeance
There are two basic deck types to use
Prospective players also have to watch out for Abzan Greasefang, which involves using the titular card to reanimate powerful vehicles like Parhellion II each turn, and Mono Green Ramp, which uses Nykthos, Shrine to Nyx to power big mana turns
Table of Contents for Additional BSJ Terms 1
So forget about combos from your opponents
Exchange that card with the top card of your library., so you basically just end up losing the game and probably a Swamp, but if you are able to cast a Darkpact you get to essentially trade your opponent a Swamp for whatever they anted - pretty dirty and cheesy, especially if they flip over a spicy rare