interesting deck idea, but how does necroface work for deck destroying... isn't it counter to the rest of what your deck does? unless you're thinking to use it as a otk, else i'd suggest u stick to 1 theme and swap them for stallers like spirit reaper etc. also, i suggest stick to either stalling or allowing them to attack... having level limit, gravity bind and messanger of peace, yet putting gravekeeper's servant is a little weird. either put 3 gravekeeper's servant then put cards like waboku etc to screw them up, or remove the gravekeeper's servant and fill up the spaces with more stall cards like more messanger of peace or sword of revealing light.
do try it out and tell how this deck goes, it seems rather interesting to me=)