Rank 1: Your Corruption and Unstable Affliction spells gain an additional 1% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a 20% chance to reset the duration of your Corruption spell on the target.

Rank 2: Your Corruption and Unstable Affliction spells gain an additional 2% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a 40% chance to reset the duration of your Corruption spell on the target.

Rank 3: Your Corruption and Unstable Affliction spells gain an additional 3% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a 60% chance to reset the duration of your Corruption spell on the target.

Rank 4: Your Corruption and Unstable Affliction spells gain an additional 4% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a 80% chance to reset the duration of your Corruption spell on the target.

Rank 5: Your Corruption and Unstable Affliction spells gain an additional 5% of your bonus spell damage, and your Drain Life, Drain Soul, Shadow Bolt, and Haunt spells have a 100% chance to reset the duration of your Corruption spell on the target.