Many commanders tell people what you are playingAzami, Lady of Scrolls says one thing, and Rhys the Redeemed says another
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
Between cards that care about modified creatures, cards like Jiang Yanggu, Wildcrafter that grant abilities to creatures with +1/+1 counters and proliferate, there are few more efficient ways to support each of these with one card
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
Bonus points if you win via Door to Nothingness using this card