Mind flayers (or possibly only master ones) can use telekinesis to drag you a space or two closer to them so they can eat your brain.

Hookshot, a tool that shoots a retractable point on a chain and then pulls things together when the chain retracts. In practice, this should probably be implemented as an invisible beam that gets shot in the player-chosen direction, with a short range of only 3 or 4 squares. It has various effects depending on what it hits:

• Wall or furniture: Player is dragged towards that space.
• Boulder or solid stone: Goes “Clink!” and does nothing. (Except maybe if the player is a giant, they can drag the boulder to themselves with it.)
• Monster: Either deals small damage, or yanks the player and monster together. The relative weights of the player and monster determine who gets yanked more (could be either or both).

Add a spell of telekinesis as a high level matter spell, which replicates some of the monster-shoving functionality you can get with #wiztelekinesis.

If you are knocked back when levitating, you should fly about 3 times as far, since you’re only being slowed by air resistance and not by e.g. your feet on the ground. This maybe shouldn’t apply to when you throw items when levitating.

If you deliver a staggering blow or other knockback to a cockatrice, and there is a monster behind it, that monster might get stoned.

If a monster is hurtled into another monster (i.e. from a monk’s staggering blow), both monsters wake up.