Gatecrash Combos

[Monrodesign]

{Duskmantle Guildmage} + {Jace, Memory Adept}

[Kaleo42]

Well {omniscience} and {enter the infinite} may as well be added.

[Monrodesign]

{Gridlock} + {Tamiyo, the Moon Sage}

[Monrodesign]

{Biovisionary} +  {Infinite Reflection}

[Malleo]

 {Ogre Slumlord} +  {Pack Rat}

[Monrodesign]

{Alms Beast} + {Silverblade Paladin}

[Malleo]

{ vizkopa guildmage } + extort +  {Exquisite Blood}

[Hermann2058]

 {Lazav, Dimir Mastermind}+  {Trepanation Blade} swing then make it the bigest thing u can mill each turn

[Stoneco1d869]

{Duskmantle Guildmage} + {Jace, Memory Adept}

Can also swing away with  {Consuming Aberration} equipped with  {Trepanation Blade} could be nasty..

[Gorzo]

{Lazav, Dimir Mastermind}+  {Trepanation Blade} swing then make it the bigest thing u can mill each turn

Now that's clever. Love it.

[Seth5000]

The orzhov guildmage second ability and exquisite blood just a standard version of seriguent bond or I think that's the card lol

[Kaleo42]

{duskmantle seer} + {exquisite blood}

[Iandtormentor]

 {Helm of Obedience}+ {Lazav, Dimir Mastermind}  as long as you have plenty mana you can have 2 of the same creature.

[Stoneco1d869]

{Alms Beast} + {Silverblade Paladin}

I like this one. Turning a situational beater into a early beast.

[G33kL0rd]

{duskmantle seer} + {exquisite blood}

I actually already made a modern deck out of this.  Seer is a great card...
Anyway, everyone knows this one already, but {Duskmantle Guildmage}+{Mindcrank}

EDIT: Well I took out the Blood but still it's a Seer deck.