...had he not been distracted by some little hamlet in Texas where he ripped the populace to bloody shreds. By the time he got to the Bermuda triangle...
Um, Anger and Wonder go into the graveyard and thus Mirri won't be fending anything off. Rofellos will generate tons of mana and Rider will bounce lots of stuff. What deck that uses Mirri can compete with a deck that would typically use Squee?
Probably. But an LD deck with tons of Rains isn't particularly menacing. A combo deck with as many dark rituals as you want is going to be pretty fast...