I teleport to you, kick you in the nads, shoot you in the shoulder, obliterate all of your creations with Vladski and Borsht's nukes, have Darkrai put you to sleep and torment your nightmares, take your money... and leave the briefcase.
"You know if you wanted it you could have just bought it. I'm a businessman now." I teleport back to my universe, bring Darkrai, Vladski and Borsht with me, and seal it up so no one can enter.