Alright- let's get into cost 2 allies. Dreadhound is a card you could play when you have an ally low on health that you can get rid of. You don't have to- which is the beauty of the card. It will give you the flexibility of dealing with abilities in raids, something that is very handy during almost any standard raid and especially automated decks I run. I'd include the card in a priest, warlock and possibly a druid deck.