Have you considered playing Body Double?

Mirror-Mad Phantasm might be worth playing, since it mills a huge portion of your library, and any copies you make of it (either tokens or with Clone effects) will mill your entire deck in one shot.

Dread Return is a reanimation spell with flashback, which could be useful.

ibstudent2200 None of those cards work well with this deck. This is a fast combo deck, so Mirror-Mad Phantasm is too inefficient to work, as well as not being very consistent. Body Double has zero use here, and I don't have any form of Clone effects. Dread Return is a different kind of combo, and one that I don't want to change to.

"I don't have any form of Clone effects"...except The Mimeoplasm.

Body Double is a card I mostly suggested as a backup Necrotic Ooze in case somebody likes playing cards with Split Second (Sudden Death, Molten Disaster, Sudden Spoiling, Trickbind, and Word of Seizing all see play in my playgroup).

In retrospect, Dread Return is more useful when going for the win with Laboratory Maniac.

ibstudent2200 when I cast The Mimeoplasm I want to be able to win that turn using one of the combos listed, and I only use cards in my own graveyard that I intentionally put there. Also, in competitive EDH, those cards aren't used as much because there are other, more cost-effective cards people run. It is not something I worry about, especially with the Necrotic Ooze combo, as I never have to pass priority. The Laboratory Maniac combo goes against the already distinguished combos in this deck, and would only slow it down.

You don't have to pass priority to use the Necrotic Ooze combo? How do you get enough +1/+1 counters on Necrotic Ooze (or The Mimeoplasm, if you don't have Lord of Extinction in graveyard)?

ibstudent2200 have you read my primer yet?

Have you ever thought of adding Tooth and Nail. It can fetch Triskelion and Mikaeus, the Unhallowed for an insta-win.

klone13 first off, I don't have Mikaeus, the Unhallowed in here, so that won't work, and by the time this deck is able to generate 9 mana, I want to be able to activate Hermit Druid and/or cast The Mimeoplasm and win, so it isn't efficient enough.

Mim is banned in our local meta, so I haven't played against him in a while. I agree with the Mikaeus comment above. You seem to have mana drain listed twice.

Dig the swag tho, +1

thehat Mana Drain is listed twice because it ramps, and it counters. I only have 1 in the deck, but I can assign it multiple custom categories.

27-1 ... I haven't played that many games. I don't think I can ever get that high of efficiency. I'm only 6-1 ;-;

Femme_Fatale I have been using XMage recently, and have found it to be much more effective, and this is generally the only deck I use. It is at 35-7 now, a lot more people use competitive combo decks on there, so it is probably a lot better for me to get that feel. I do own this deck in real life, but don't get out much to play it for real. My closest LGS is about 2 and a half hours away, I do it sometimes when I have the time, but I have a really busy schedule, so I play on there when I have the time during the weeknights.