I was testing it out for a while it helped me in many situations especially against hidden rush deception or the wards with light and often I get frontline or blitz creatures that made huge impact. It is weak against nature though having a lot of regen. It is situational and RNG based but luck has been helping me a lot lately :p. As for the 1 ofs I have each are situational too and if luck is on your side and you get them when you need them they prove more useful than any other card in the deck.