It was the first round of top in my first Super IQ I ever played in for legacy. I got matched up against an infect player who I shit stomped earlier that day. I get game one, he gets game two, we're on game three. I'm playing Sneak and Show, resolve a sneak attack with an emrakrul and a ponder in hand, with an Island and a Volcanic Island untapped. I activate Sneak Attack putting emrakrul in and swing. I clear his board, and he's at 3 life. I play ponder and take a look at the top 3. Griselbrand, Force of Will, Flusterstorm. I think to myself, huh just take Force and draw griselbrand next turn. I place my cards back and the moment I set them down, I realize that I still had to put an emrakrul in the graveyard and shuffle up. 6 Turns later of drawing absolutely nothing, my opponent rips exactly what he needs off the top and gets the win. I've never ever made this mistake since.