Teferi's Puzzle Box

In my opinion, This is the funnest and one of the most versatile cards ever printed. It can go in any deck, most times your opponent wont bother to destroy it, and it helps you quickly touch every card in your deck. usually in about 4 turns. The randomness is soooo much fun, forget about combos, start building deck where every card stands by its self. Simply awesome and super frickin fun...

this is a great card especially with underword dreams, you have your opponent draw as many card in their hand and they lose 1 life for each card drawn.

Megrim won't work with the Puzzle Box... but combining it with Underworld Dreams and Land Tax was an awesome idea!
As much as the Puzzle Box can mess up with your opponent's strategy, it can do the same to yours. This means that the Puzzle Box usually makes games incredibly random and a bunch of fun. And that idea with Land Tax at least allows you some level of advantage over your opponent.

An even greater combo: upgrading Land Tax's practical effect from "fill your hand with land" to "draw 3 extra cards" since the lands from Land Tax are replaced by other cards by the Box; they are less likely to be lands than normal.

Teferi's Puzzle Box is a foundation to a pretty crazy game. Megrim and Underworld Dreams do the damage, Howling Mines fill the hand, hippy, stupor, mindtwist, rav rat for discard -- you can even make it crazier with noetic scales. It wins a lot more that you'd think -- mostly because it just blindsides the field -- so you can only play it once in a while. Pretty fun, though.

This card is pretty decent, especially if used with Chains of Mephistopheles. Just throw a couple of Anvil of Bogardan's in there and you can drive yourself crazy trying to figure what the heck is going on.