I havent come up with this, actually lost to it few times and realized how brutally OP it is.

Win on T2 with coin, or T3 without.

Combo for 3 mana:

1. Test Subject
2. Radiant Elemental
3. Embalming Ritual > Test Subject
4. Power Word: Shield > Test Subject
5. Topsy Turvy > Test Subject
6. Repeat steps 3 to 5 to lower the cost of Grave Horror(s) to 0.
7. Play 5 Grave Horrors.
8. If your opponent didn't by some miracle concede by now, just smorc him next turn :)