Edric, Spymaster of Trest is banned as a commander in Duel Commander format, but it may be part of your deck.
22-09-2011
wotc
A creature controlled by an opponent that deals combat damage to another opponent will cause Edric's ability to trigger. The creature's controller chooses whether to draw a card.
22-09-2011
wotc
When a creature you control deals combat damage to one of your opponents, you may draw a card.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.