You have an army?

[Deathseide]

  {Gravecrawler} +  {Phyrexian Altar} +  {Grave Pact} + any single zombie card of your choice

This is pretty much a death sentence for any creature, no matter the ability, that your opponant controls

Edit: found a perfect addition to this, a  {Burning Vengeance}, that will not only chew your opponant's critters but also your opponant...

[Coffee Vampire]

Nice!

[MisterJH]

That is actually pretty awesome

[Double-O-Scotch]

{Ashnods altar} gives an extra colourless, and {altar of dimentia} mill to death.

[scarsabrex]

{Ashnods altar} gives an extra colourless, and {altar of dimentia} mill to death.

You're missing the part where you need the phyrexian altar to produce {B} to recur the gravecrawler. Colorless won't do it here.

[Deathseide]

Of course there are multiple options on how to work it, this one is for the dedicated zombie decks

[MarduArrow]

{Ashnods altar} gives an extra colourless, and {altar of dimentia} mill to death.

You're missing the part where you need the phyrexian altar to produce {B} to recur the gravecrawler. Colorless won't do it here.

{Rooftop Storm}

[Birdbrain]

{Ashnods altar} gives an extra colourless, and {altar of dimentia} mill to death.

You're missing the part where you need the phyrexian altar to produce {B} to recur the gravecrawler. Colorless won't do it here.

{Rooftop Storm}

Can someone say Dr. Frankenstein?

Anyway, one card you might consider with the combo at the top of this tread is {unruly mob} clear there board and swing with a massive creature

[Bman0121]

Replace  {Grave Pact} with  {Blood Artist} instant death

[Iandtormentor]

{Ashnods altar} gives an extra colourless, and {altar of dimentia} mill to death.

You're missing the part where you need the phyrexian altar to produce {B} to recur the gravecrawler. Colorless won't do it here.

{Rooftop Storm}

Can someone say Dr. Frankenstein?

Anyway, one card you might consider with the combo at the top of this tread is {unruly mob} clear there board and swing with a massive creature

Or  {Lumberknot}

[Deathseide]

Replace  {Grave Pact} with  {Blood Artist} instant death

Why not use both?

[Deathseide]

{Ashnods altar} gives an extra colourless, and {altar of dimentia} mill to death.

You're missing the part where you need the phyrexian altar to produce {B} to recur the gravecrawler. Colorless won't do it here.

{Rooftop Storm}

Can someone say Dr. Frankenstein?

Anyway, one card you might consider with the combo at the top of this tread is {unruly mob} clear there board and swing with a massive creature

Possible on both, unless you keep with mono black

[Deathseide]

Just thought of a card that would make this combo very nasty...
{lightning coils}
That way you make your own army while wiping their's out

[Stoneco1d869]

Replace  {Grave Pact} with  {Blood Artist} instant death

Nice

[Deathseide]

Bump