Conduit

A conduit is a block that can be placed underwater and surrounded by prismarine to activate it. Once active, it empowers nearby players touching water or rain, prevents them from drowning, and attacks wet monsters.

A conduit drops as an item when broken with any tool or by hand, but a pickaxe is the fastest way to break it.

Like other rare blocks such as beacons and shulker boxes, it always drops when destroyed by an explosion.