I've been playing a fairly stock LED Dredge deck the past few years, tweaking it here and there for tournaments and to adapt to my local meta. I've done a lot of reading since I picked up the deck, and one question that I would like to put to more experienced pilots is why it doesn't run Bloodghast.

Undiscovered Paradise + Bloodghast looks on paper to be more than good enough to squeeze into the deck, but I can't find any literature on why that would not be the case. The only thing I can think of as to why it would be sub-optimal is that Undiscovered Paradise prevents you from activating Cephalid Coliseum on turn 2.

Any thoughts? Sorry if this is a discussion that has already been hashed out and shelved.