Found this nifty program for trying out builds offline. Find it here
Played around with it and came up with this build for my corruptor
Name: NightPlague
Level: 40
Archetype: Corruptor
Primary: Dark Blast
Secondary: Thermal Radiation
Origin: Mutation
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Power List for Character
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Level 1 --> Sprint
Level 1 --> Warmth
Level 1 --> Brawl
Level 1 --> Scourge
Level 1 --> Dark Blast
Level 2 --> Rest
Level 2 --> Gloom
Level 4 --> Moonbeam
Level 6 --> Cauterize
Level 8 --> Tenebrous Tentacles
Level 10 --> Recall Friend
Level 12 --> Night Fall
Level 14 --> Teleport
Level 16 --> Power of the Phoenix
Level 18 --> Grant Invisibility
Level 20 --> Invisibility
Level 22 --> Thaw
Level 24 --> Torrent
Level 26 --> Life Drain
Level 28 --> Forge
Level 30 --> Hurdle
Level 32 --> Health
Level 35 --> Stamina
Level 38 --> Blackstar