Not sure if there is a bug here, but I have used 3 days worth of energy, plus any extras I get from the various quests etc, and have used them all (pretty much) on Stage 7 of Deadlands, but have not dropped one single Rare from this. Is there a specific drop rate, or is thre is bug here? Seems a bit excessive to have played this stage and not drop a single Rare. I have gained loads of gear and mystery shards. 

When I originally stated playing this game (using a different email back then) I got Warmaiden after about 15-20 runs on the stage, yet I have proably gained 100+ shards, and countless uncommon and common, plus gear, but never a rear.

So is there something broken here, or have you simply increased the rarety of the rare drops?.