iMtG Server: Gathering

Krenko's Alarm 68 cards, 8 sideboard 4 {Izzet Boilerworks} 5 {Island} 7 {Mountain} 4 {Sulfur Falls} 4 {Steam Vents} 24 lands 4 {Goblin Chieftain} 4 {Krenko, Mob Boss} 4 {Hellrider} 12 creatures 4 {Izzet Signet} 4 {Gitaxian Probe} 4 {Serum Visions} 4 {Cerulean Wisps} 4 {Inaction Injunction} 4 {Intruder Alarm} 24 other spells Sideboard 4 {Lightning Bolt} 4 {Tormod's Crypt} 8 sideboard cards Notes: This deck uses the Card intruder alarm with Krenko to get infinite goblins.  Any suggestions on how to make the combo faster or more reliable?

 {Goblin King} seems better than the  {Pyreheart Wolf} just so you can double lord up to make sure you dont get blown out by dumb -1/-1 or -2/-2 effects and more card draw to combo off easier