But why is a situational card so bad? If you have a tactic, that can be easily screwed up by a specific card these may come in handy. but then of course, there may be many of these, and if you dont want them, dont buy them. If you think it can help you, buy it. Its that simple. I think.
*EDIT*
Just coz its very annoying when "50%" of your creatures are about to miss, and: your anubis misses, your devonian dragon misses, your crimson dragon misses, your grown scarab misses, and what hits? WHAT?!?!?! A NASTY PHOTON FROM AN EGG! And this is for 3 rounds, then i stole it. What is a crap? That, when i have it, only the weakest creatures (or even no creature) miss, when the AI has 6-7 down! Well, think about this too.
*EDIT*
And no, i do not even use a light deck...