isn't demon a little bit too OP?
this card have a very strong skill, 'cause in 6-7 turns you can (with only 1 demon) turn down a flying titan that have 80 hp.. so.. if you have 2 demons in play (remember that is a 7/7 so it's strong even without skill) you kill a flying titan (flying titan is the creature with most hp in this game) in 3-4 turns? too way OP in my opinion, specially for 6 darkness quanta.
in my opinion however a skill that cause poison to a creature is a powerful skill even when it gives 1 poison damage, so, even causing 2 poison damage is really strong, but can be played.
but 4 poison damage.. for randon quanta.. well.. it's way too much
this is my opinion however
however.. i truly like the arts