That's my favourite cheap cards. I really think their value will blow up at the end of chaos packs or when the print run ends.
Number 1: Djinn Chwala (Edition: Reward)
Price: 0.60/0.70$
It's one of the cheapest epic and you can rent it with yROA of 45/75%. Really good in low mana fight
Number 2: Uraeus (Edition: Reward)
Price: 0.60/0.70$
Same as Djinn, it's a real good cheap epic. Stunning in every deck, the neutral element make it a must buy. yRoa is high too
Number 3: Mycelic Morphoid (Edition: Chaos)
Price: 0.04 $
Starting at level 3 it has Thorns ability. Really good in low mana fight, the perfect ambush for sneak monsters. Put it in first or last position.
Number 4: Scavo Hireling (Edition: Chaos)
Price: 0.13/0.20$
Decent speed, at level 10 it blow up. It not only repairs your armor, it slows down enemy monsters and it can't be targeted (unless it's in first position). What else do you want? :D
I wont be surprised if at the end of chaos its price'll be 1$ or more
Number 5: Venari Knifer (Edition: Chaos)
Price: 0.12/0.15$
Put it in the first position and watch the enemy struggle to put it down. If the enemy hits or miss it, takes damage. Real good speed. Nice cheap card
What about you? What are you investing?