Urges of the Unhallowed {1}{U}{B}
Sorcery (r)
As an additional cost to cast ~, sacrifice X untapped Zombie creatures you control. Urges of the Unhallowed deals X target opponent. That player discards X cards and you draw X cards.
Feed the Horde {B}{B}{2}
Sorcery (r)
Each player sacrifices each creature he or she controls, then puts a black 2/2 zombie token onto the battlefield for each creature sacrificed this way.
Flashback {B}{B}{5}
Leader of the Damned {U}{U}{B}{B}{2}
Legendary Creature - Zombie (m)
5/5
Deathtouch, Intimidate
When ~ enters the battlefield, each creature on the battlefield becomes a Zombie in addition to its other types.
{U}{U}{T}: Tap target Zombie creature, then gain control of that creature for as long as you control Leader of the Damned. Activate this ability only as a sorcery.
{B}: Each other Zombie creature you control gains deathtouch until the end of your turn.
Sacrifice a Zombie: You gain life equal to the sacrificed creature's toughness. It deals damage to target creature equal to its power. Activate this ability only as a sorcery.
Intercranial Laboratory
Legendary Land
{T}: Add {1} to your mana pool.
{4}{T}, Sacrifice a Zombie: Add an amount of {B} to your mana pool equal to the sacrificed creature's power, then add an amount of {U} to your mana pool equal to the sacrificed creature's toughness.
{B}{B}{1}{T}, Sacrifice a creature: Exile target Zombie creature card from your graveyard. Put a token into play that's a copy of it with a -1/-1 counter on it.
Urges - Too strong. See Soulblast and Devouring Greed. This has the immediate power of Soulblast, but you also nuke their hand/gain that many. Sure, you should win off of it, but that's not what should be happening on a 3 CMC spell, especially in BU.
Leader - Should have some name to set it apart, since it's a legend. Why deathtouch on a 5/5? It'll kill most things anyway. Why intimidate on a creature that you want to tap every turn to gain control of their creatures? When you're done with his tap ability, there shouldn't be any creatures anyway. Third and fourth abilities are tacked on. Try to limit a card to 3 abilities, max, including keywords. You currently have 6 here.
Laboratory - Assuming that it's a land. Seems okay, if a bit strong.
Urges of the Unhallowed {1}{U}{B}
Sorcery (r)
As an additional cost to cast ~, sacrifice X untapped Zombie creatures you control. Urges of the Unhallowed deals X target opponent. That player discards X cards and you draw X cards.
Feed the Horde {B}{B}{2}
Sorcery (r)
Each player sacrifices each creature he or she controls, then puts a black 2/2 zombie token onto the battlefield for each creature sacrificed this way.
Flashback {B}{B}{5}
Leader of the Damned {U}{U}{B}{B}{2}
Legendary Creature - Zombie (m)
5/5
Deathtouch, Intimidate
When ~ enters the battlefield, each creature on the battlefield becomes a Zombie in addition to its other types.
{U}{U}{T}: Tap target Zombie creature, then gain control of that creature for as long as you control Leader of the Damned. Activate this ability only as a sorcery.
{B}: Each other Zombie creature you control gains deathtouch until the end of your turn.
Sacrifice a Zombie: You gain life equal to the sacrificed creature's toughness. It deals damage to target creature equal to its power. Activate this ability only as a sorcery.
Intercranial Laboratory
Legendary Land
{T}: Add {1} to your mana pool.
{4}{T}, Sacrifice a Zombie: Add an amount of {B} to your mana pool equal to the sacrificed creature's power, then add an amount of {U} to your mana pool equal to the sacrificed creature's toughness.
{B}{B}{1}{T}, Sacrifice a creature: Exile target Zombie creature card from your graveyard. Put a token into play that's a copy of it with a -1/-1 counter on it.
Leader - Should have some name to set it apart, since it's a legend. Why deathtouch on a 5/5? It'll kill most things anyway. Why intimidate on a creature that you want to tap every turn to gain control of their creatures? When you're done with his tap ability, there shouldn't be any creatures anyway. Third and fourth abilities are tacked on. Try to limit a card to 3 abilities, max, including keywords. You currently have 6 here.
Laboratory - Assuming that it's a land. Seems okay, if a bit strong.
Sorry, the text on Leader made my eyes glaze over...
http://forums.mtgsalvation.com/showpost.php?p=4557651&postcount=1
TheWarden's Creative Commons Music Pick Project (Retired):
http://forums.mtgsalvation.com/showthread.php?t=336498