It may make sense to eventually redo this as a poll. But for now, I need research. That means asking all of you. What are the most often error-prone, underestimated, or just plain poorly understood cards in this format? This includes cards you can trick your opponent with. It also includes cards that folks misjudge the purpose for or how to properly use either in their own deck or how their opponents are using it. I will list a few that I am familiar with.

Vendilion Clique: In SCG Orlando 2009 or 2010, my round 5 opponent with RUG saw me cast cards like Jotun Grunt off of basic Plains. This was the early days of D+T. In a tight spot in g2, he condescendingly declared "I will give you every opportunity to lose" and cast Vendilion Clique. I said that it resolved and he paused, looking me in the eye. Having said what he did, I thought he was going for a free look at the one card in my hand. I asked if he was targeting me with the ability and he said "no" before proceeding to cycle the card in his hand. I was lucky to not fall for that. Upon reflection, I realized that he was looking to get me on illegally drawing a card. I underestimated the broken jedi maneuver he was going for. That brings me to...

Flickerwisp: Same game, same Vendilion Clique. It was a slog to get the last few points of damage through for both of us. I had been stuck using Karakas on his Clique to survive. He saw a lot of cards that way. We both had 4 or 5 life or something. I had an active Vial on 3 when he went to hit Karakas with Wasteland on my eot. I vialed in Flickerwisp to save it. No attack from him. I topdecked another Flickerwisp on my turn and waited. He drew, Brainstormed, thought about it for a very long time, grumbled that I might have another wisp, then Wastelanded Karakas (which I allowed), and went to Lightning Bolt my wisp. This was everything he needed. But I vialed in the second wisp to save the first. The first came back eot. When it did I flickered his Clique which stayed exiled on my turn (he called a judge to confirm this); long enough for me to deal 6 ftw. What made that so sweet was the dripping disdain at which he treated me and my random pile of Flickerwisps. (After the match he complained that he wanted to face real decks.)

Gerry Thompson, to his credit, said publicly that he was surprised how dangerous Flickerwisp is after he faced me the next year. He blew two Force of Wills on them in the same game.

Flickerwisp is the card that new D+T players have to simply take the word of experienced players not to cut. They all seem to want to.

Scryb Ranger - Has so much, just so much important text. Players are always turning it to read it. Out of time for now.