Stone Haven Outfitter
 
This is a card that is likely to remain quite unique as time goes on - a lord that doesn't work for a tribe, nor even a color like M15's Paragons. There are a lot of tribes that might want its effect, and more than one color; yet that ironically means they can more or less have it, since it's not like trying to jam a Merfolk into a Elf deck. It makes splicing any deck with equipment-matters cards not only reasonable but downright attractive; if Goblins were scary before, what happens when they add white for this card and some Bonesplitters, with Sunlance for dangerous blockers?
 
Constructed: 3/5
Casual: 5/5
Limited: 4/5
Multiplayer: 4/5
EDH/Commander: 4/5