Since we already have the amazing high speed hell cat, why not a hell hound?

Hell Hound
1 darklegion 1 X 4 flux

1 attack 3 health (so he can kill cats... since supposedly dogs chase cats around, and they don't do as much damage but enough to hurt the frail but deadly cats )
4 speed 1 sight 0 range

BloodScent (or scent prey) 5: all creatures within 5 spaces with health lower than their max or only 1 health (if one health is their max then they're automatically prey) are revealed to the player who controls the hell hound. 5 spaces since a cat can outrun a dog's nose usually.

This for countering my own combo really... someone complained about having agent of death + shroud is too cheap... so with hell hound, one just damage the agent once, and keep the hound at a safe distance and can smell death's presence and help give fair warning for the other player. It'll still be a matter of skill though to be able to thwart death using terrain to keep him from killing the hell hound as they might accidentally meet up on the map... Also notice I didn't make the hound too strong for another reason. Because if it's too strong, then instead of being a countermeasure for agent of death in a shroud it becomes a helper... so it's a double edged sword. The main problem with this card is, Hell cat offers great distance coverage and deals decent damage for an opener card and can offer 4 vision as a scout. However the hell hound needs vision support for fighting units at full health and greater than 1... a flame ent would burn the hound into cinders... it could be 2 attack and 4 health... but personally I don't think a dog is that much stronger than a cat... :/