Well, I do have Heaven's String and Giant Grinder for my extra deck, but I don't use them that often cuz my deck is focused on power, not on control, and because Gadjiltron Dragons are the only lv8s I run in them :V Machina Cannons also put too much a strain on my hand, which already lacks drawing power, so I avoid running those. They would have made good Machina Armored Unit fodder, but they're semi-nomi, so...;_;
And yup, Malefic Drain is awesome, especially paired with a field-locking Kaiser Colosseum :V Sadly, Drain doesn't go well with my Meklord Emperors, which I added to the deck as back-ups in case my Malefics all die. And all those anime/manga-only Malefic cards look hella delicious too :< Also, my Malefic deck becomes sort of a punish-then-forget deck in group duels due to its vulnerability to destruction, but if I get out a Truth and land an attack everyone gets a massive slap to the face, so it's really fun to use in group plays :V There's still that little problem of sufficient draw power to get that much-needed Skill Drain into my hand, which I've been trying to work on (with all my decks lol). Actually, now that I think about it, Malefic Drain would be actually pretty solid against most deck in solo play. Maybe I thought it was fragile cuz at school I play a lot against Dark World, which does endless amounts of Graveyard-based destruction, and Alien, which can steal my Malefics :V They're both pretty hard counters to my deck, especially the Alien deck. If they manage to steal any of my Malefics at all I'm 3/4 screwed, and then almost certainly if the one they stole was a Truth :<
Also, I thought of a combo where you summon a regular Malefic, Veiler it, then normal a Malefic Gear and sync for Paradox (since neither Gear nor Paradox has the eff that prevents having multiple Malefics). Then, either ATTACK FOR MASSIVE DAMAGES, pop a Skill Drain to be able to keep both 'round, then xyz for ol' Gustav in MP2 and le punch for 2000 :V
Well, lately card game activity at my school dwindled, and all my YGO duels have been almost exclusively a guy running Dark World, so I'd be happy to duel any of ya guys on DN for a change :3 I might try out really stupid prototype decks against you guys too, as soon as I figure out a way to build a deck that centers around the Rocket Arrow Express :V