Improved Dispel is a Cleric Skill that upgrades the main spell Dispel, by allowing it to remove additional harmful effects. While it is unlikely to have multiple negative effects at once (especially with immunities), this skill is not recommended.
1/3 : Enable Dispel to remove 1 additional harmful effect.
2/3 : Enable Dispel to remove 2 additional harmful effect.
3/3 : Enable Dispel to remove 3 additional harmful effect.