Pillagers are hostile illager mobs armed with crossbows. Pillager activity appears as:
Water Tactics: Pillagers cannot swim well; using a boat or fighting from a "bay" area gives you a significant advantage as they struggle to move in water. the pillager bay minecraft
Approaching the bay by boat often triggers a "Sea Patrol," where Pillagers and Raid Captains intercept the player. Pacification Missions: Skilled players can "pacify" the Bay. By breaking the crossbows Pillager Outpost & Patrols — Quick Guide What
The Strategy: If you aren't ready for a raid, drink a Bucket of Milk immediately to clear the effect. If you are ready, head to the nearest village to trigger the raid and earn the "Hero of the Village" discount. Turning the Outpost into a Farm Pacification Missions: Skilled players can "pacify" the Bay