Gah, I hadn't made the artistic connection between Make a Wish and Grapple With the Past. Here's an extra squicky one that goes straight for the body horror, though I'm not quite sure how to embed with their particular format.
http://gatherer.wizards.com/Handlers...9937&type=card
There's also that whole Emerge mechanic, which has you "casting" Eldrazi abominations at a discount by sacrificing another creature and deducting that creature's casting cost from the Emerging one.
This one is basically everyone drinking the Kool-Aid for a mass conversion.
About the only thing missing from this card to make it perfect would be if the buff said that your Wizards also counted as Insects in addition to their other creature types.
This one is just creepy, but downright abusive if you use a deck that involves Processors to take their exiled cards into the yard and deny your opponent access.
The last one I'll comment upon. Don't let it touch you.
As an aside, I would love it if Wizards decided to keyword "[CARDNAME] must attack each turn if able." as "Frenzy"