My name is Kevin Roberson, i've played magic since mercadian was new and i've generaly made decks based on what seems fun and strategicaly sound.  Some are rather simple but others like the one i'm submitting to your site are rather trickey but horribly efficient, especially when there are more than 2 players.

My discard deck has no single basis besides plenty of megrims and make them discard, but has plenty of combinations to make this effective.  The most powerful of these combinations is Temporal Adept, Warped Devotion and Megrim.  The temporal adept pays 3 blue to send anything to their hand, since its a discard deck the idea is that they do not have a hand thus the warped devotion sends that permanent directly to the graveyard while the megrim deals out 2 damage for each megrim of the four in my deck that are in play.  Going with the megrims you can also get a lot of fun using several wheel and deals and discordant dirges, the wheel and deal makes them drop their hand for massive damage and draw seven cards. the discordant dirge gets a counter every turn then sacrifices to make them discard a number equal to the number of counters, effectively they drop 7-14 cards and take massive damage for five mana for each of the four times you should be able to do this.  If this isn't killing them fast enough toss in urborg drakes and avatars of will for massive damage in the air.  There are tons of cards that you can use to replinish their hand and make them drop it again but the base cards in the deck are as follows:
4 megrims
4 warped devotions
2 temporal adepts
4 avatars of will
4 discordant dirges
2-4 urborg drakes
4 hym to torachs
4 ravenous rats
4 wheel and deals
4 chilling apparition's

1-2 sibilant spirit's
and any number of unburdens, stupors, hypnotic specters or anything else to make them drop cards, draw cards, or take damage and convenience yourself in doing so with plenty of polluted deltas and salt marshes to power the whole opperation.

-Kevin Roberson luckyrabbit30@hotmail.com