Werner and I learnt something interesting today about the format.

1. Lifegain on mass might be a bit strong or maybe there needs to be some more top end to the aggressive colours. There simply doesn't seem to be enough time or power to deal with a player that has shot back to 7 or 8 life.

2. Mulligans have an apparent bonus in that they put you ahead on cards. As such, perhaps each colour maybe needs a "win the game at 4 mana" card to prevent that.

I am particularly happy with the little black rack/burn deck that I've created however I think I need to maybe strip out some of the lifegain.

Bone Saw might have a place in the cube... Good with Spikeshot Elder. Might be a good replacement for Navigator's Compass.

Think Healing Grace should come out for something like Sacred Cat.