Damn Yes!

[Ryggrad82]

{Phenax, God of Deception} + {Serra Avatar}

Use Phenax's mana ability on Serra Av.

[Remillo]

It's also really fun with {Lord of Extinction} (in BUG) and {Consuming Aberration}.

[Destore117]

 {Umbra Stalker} could get nasty {Wall of Blood} also, if you've got {Essence Harvest} handy.

[DrainCleaner]

{Phenax, God of Deception} + {Serra Avatar}

Use Phenax's mana ability on Serra Av.

You're gonna spend 13 mana to mill them for their life total (which is probably much less than 20 at that point anyway)?

[Dsx Cherno]

A better use of {Serra avatar} is {loxodon warhammer}

[LinkCelestrial]

How about  {Duskmantle Guildmage}? If you've got more life that's game.

[Swamplord99]

{duskmantle GuildMage}+{Mindcrank} FTW

[LinkCelestrial]

{duskmantle GuildMage}+{Mindcrank} FTW

{Duskmantle Guildmage} + {Mindcrank} for screw you I'm not playing again.