The Trolling Pleb

Defender, hexproof, indestructible
At the beginning of the game, you may reveal
The Trolling Pleb from your opening hand and put it onto the battlefield. If you do, troll target opponent. (You and that player switch hands and libraries, then each player puts the top 26 cards of his
or her library into his or her graveyard. This effect lasts until the game ends.)
I am the Trolling Pleb. I will troll all of you.