Where do Warden Spawn

Where to Find the Warden In Minecraft, the Warden is found in the Deep Dark biome and is awakened by sculk shriekers. sculk shrieker When a sculk shrieker is activated three times with a light level of 11 or lower (and another Warden is not within 48 blocks), the Warden will spawn and dig up out of the ground. After spawning, however, if the Warden is calm and has not sensed any vibrations for 60 seconds, it will immediately dig back into the ground and despawn again. If you are having trouble finding the warden, you can summon the warden using a cheat or you can use a spawn egg.

In Minecraft, the Warden has 250 hearts  for health. This gives the Warden 500 health points (because 1 heart = 2 health points). To kill the warden, you need to inflict 500 points of damage to the warden.