Some text from Minecraft Wiki used under Creative Commons Attribution-Share Alike License 3.0
|Attack Strength||2HP (1x )|
|Spawn||Spawns in End Cities|
A Shulker will disguise itself as a purpur block until the player gets too close. Its shell will then lift off. When it attacks, a white bullet will follow the player no matter where they go. Being hit by the Shulker will give the player a 10-second levitation effect and will do a little bit of damage. This effect is very useful, as it allows the player to fly up the End City if he/she keeps getting hit. However, if the effect runs out on the player when he/she is in mid-flight, he/she can sustain heavy fall damage.
Levitating players is not the only ability of the Shulker. They can also teleport, when at low health. They teleport around 5-10 blocks away. The fact that they can teleport is much like Enderman can, the only other Mob who has such an ability.