• A tentacle leaves high over your shoulder, like a scorpion's tail, and stretches toward what you look at, up to 14 blocks away.
• An enemy in its line, in sight, is hooked (×0.8), slowed and dragged in to about 2 blocks in front of you.
• No enemy: the tentacle hooks into the block you look at and pulls you to it. The fall it saves you never hurts.
• Nothing within reach: nothing is cast.
• With the centipedes out, the same key is Constrict; in the demon form, it casts both: the foe is coiled and still dragged to you.

Taught by the scroll.