The Oblivion Catalyst is an item added in AbyssalCraft, mainly used as a power source for certain things. It is essential to progression, as the Gateway Key requires one.
Crafting 
Edit
In crafting table (prior to AbyssalCraft 1.8.8 Beta)
[SO][RD][SO]
[RD][EE][RD]
[SO][RD][SO]
SO = Shard of Oblivion
RD = Redstone Dust
EE = Eye of Ender
Infusion Ritual (post AbyssalCraft 1.8.8 Beta)
Infuse an Eye of Ender with 4 Shards of Oblivion and 4 units of Redstone Dust. Requires 2000 PE (as of AbyssalCraft 1.8.9.5)
Usage Edit
Used in the crafting of the First Gateway Key, the Oblivion Deathbomb and the Abyssalnomicon
This thing can make you super buff:3
