Oh hey, its a card that removes treasures
The Trickery resolves, and you cast the first mega-powerful bomb in your deck for free on turn two, such as a 15/15 Emrakul, the Aeons Torn, which gifts you an extra turn to boot thanks to that cards ability
That creature will still deal damage to you
There's a big advantage to sneaking it onto the battlefield, despite the cost, because when it deals combat damage to an opponent, you can pull a creature from that player's graveyard, which then enters the battlefield under your control, tapped and attacking that player
Then exile it.) Sorcery Wake the Dragon Create a 6/6 black and red Dragon creature token with flying, menace, and "Whenever this token deals combat damage to a player, gain control of target artifact that player controls." Flashback (You may cast this card from your graveyard for its flashback cost