Instructions
Visit the Borean Tundra, located in the far western edge of Northrend. Level up to at least Level 71 or higher before attempting to battle Churn. Battle other players or computer characters of equal or lesser level to raise your own level without dying.
Restore yourself to full health before finding Churn. Cast a healing spell on yourself or wait until full health has been restored on it's own. Engage Churn in battle. Avoid numbing attacks which are the primary form of initial fighting for water elementals.
Cast healing spells on yourself if applicable to resist damage created by Churn's "Scalding Steam" ability. Kill Churn using destructive spells or weapons depending on your character.