So this is a faster, pricier version of a budget deck I saw on GatheringMagic. Jarad brings the pain.
My friend John said he thought it was kinda strange how Jarad wasn't really synergistic with his Guild's mechanic. Upon further playtesting, I actually tend to think he may be quite synergistic to the point this deck is fast as hell, lethal and can take on most other popular decks I've seen at the moment.
Multiple opponents? Check. Aggro? Check. Mill? Check. Countermagic? Check. Might have a little trouble with Delver builds, but an early Abrupt Decay fixes that. No real life gain, so burn could be an issue. Also large flying creatures.
Ideally, though, the game shouldn't get far enough for that to happen. Most playtests I've been through so far have me dealing lethal damage to multiple opponents by turn 6ish or so.
Premise is simple... Early Lotleth, discarding creatures to make him bigger. Jarad's Orders to go fetch things you need, like Jarad himself if you don't play him by turn 4. Once he's on the field, you can use scavenge abilities to make Lotleth bigger and bigger until you can blow him up with Jarad's sacrifice ability and kill everyone at once. Multiple Jarads in hand? Ditch the others to Lotleth Troll to make the one on the field bigger. If he dies, no problem, bring him back.
Rancors and +1/+1 Counter adders to make anything you need to get big quick. When they're on the field, block with them and if they're gonna die, you sac them before they die to leave the attacking creature alive but deal everyone a ton of damage. Or if that doesn't present itself as an option, you can use sluiceway scorpion and lotleth troll with pumped up P/T to simply beat down your opponent.