Of the three you named - mirri can whup all but the rider... and he would be so tied up in trying to fend her off, that other critters would go by the wayside...
The only other I really liked was volrath... but mainly his stronghold...
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?