suppose i am playing a card game with three other people. a tarot deck is dealt out between us, with the fool and 1 of trump removed. i look in my hand and discover that i have been dealt the 15, 16, 17, 18, 20, and 21 of trumps. i am allowed to request one card from the person sitting on my left; i request the 19. they have it and pass it to me in exchange for one of my other cards.

what are the odds of this happening?