I don't understand this card. Is it just a really bad Tolarian Winds, or is there something I'm missing?

Saves all your stuff from board wipe, at the cost of possibly losing a carefully sculpted hand. At the other cost, is if someone counters the board wipe...you're boned since all your stuff got shuffled in.

But... it doesn't save your stuff! Having it in your library is no good at all: most games they're just as "gone" as if they were in your graveyard. It's terrifying card disadvantage. (For example, Terminus is played quite a bit, and this is no good at all as a defence against Terminus.)

Hmmm...I like the mechanic of this, maybe it can be changed to all player's stuff?

Could be, if you increase it's cost to maybe or more. You're going to get to go first, which is huge. I'd just expect the player who cast this at the end of their opponent's turn to do some combo and win on their own turn.

Alternatively, you could cost this card at... maybe ... and make it spicy. It doesn't matter if it has the same cost as Tolarian Winds... since returning the permanents could be a drawback or a boon.

Edit: Hold it... why did I assume this was a combo engine when it effected multiple players, but not a combo engine when it effected only you? Now that I look at it, Joz may have under-costed his card. In a High Tide deck, for example, this card could be a better choice than Prosperity. It's certainly super-good in Legacy, playing a similar role to Hurkyl's Recall there. It's probably best to just leave this one alone. Not a very large audience for the card, but those who get it will appreciate it.

I under costed something, oops! (looks around for anyone that noticed so that I can mark them for death.)