Though credited with building the Hellhorned's section of the Rail, Grrrg wasn't able to complete it without help from other demons. Some needed more motivation than others.
Grrrg's Goad is a great pickup as long as your deck has Demon units that are able to take advantage of it that are a meaningful part of your strategy - it is a Frenzystone on all of them that does not cost anything (more than it cost to obtain Grrrg's Goad) and does not take an upgrade slot.
Grrrg's Goad is one of the best relics provided you feature Demon units in your run, and if you get this Artifact early, you probably should.
See: Version History
|1.0.0||Added Grrrg's Goad.|