i am a fan of prismatic wall, i love it in fact.
necronomicon is actaully very brilliant, it follows the element has mono element use is priced correctly(imo). great job.
i also in favor of the quantum pendulum-its simple matches what pendulums do. has stategic comparitive use to towers. without being plain out better.
the fear shield(did not vote for), is a great death alternative shield. and i can see it having a great effect on the game, just as the fire shield does. in fact it can comparitively be used in the same instances for survival and control(a powerless immaterial is as good as a dead immaterial-imo). plus i could really go on and on about this card and all its comparisons over fireshield/other shields. but i wont.
i did however vote for the poison trap, its just everything i like. punishment for using 'mess with my stuff' stuff. however not sure if it should be un-stealable. let them waste a steal on it get their poison counters, and save your other crap you'd rather them not touch. (like me using hourglass-even though i dont really use it, just cause i know they think it will hurt me somehow if they destroy/steal it, instead of my items i really need.)