Do you have any EDH / Commander related confessions?
Have you ever cheated in the game, maybe by accident? Do you always keep Sol Ring in your hand on T1 so you don't get targeted? Do you hate full art cards?
I like infinite combos. They just need to be more than 2 card combos. The more convoluted the better!
A couple of games ago I accidentally played an Unmarked Grave, which let's you tutor a non-legendary creature and put it in your graveyard, as if it was Persist, which let's you reanimate a non-legendary. Noticed it a few turns later, but kept it to myself, because it would have been a huge hassle for everyone.
Sometimes, when I read a new card, I get so excited of the possibilities, that I skip words and miss that they have additional conditions. Then I wonder why nobody else is talking about the card and why it's so cheap. Often I'll have already ordered a couple of copies and play them in my decks before somebody points out mid game that the card doesn't quite work the way I thought...