Gives an enemy a mace, which spins round 2 or 3 times at D1 radius, then move in to a radius of 20, spins quickly a couple of times, then launches off at Link and starts over.

D0: Number of enemy on the list to give the mace to
D1: Max radius of the mace. Set to a value greater than 20, otherwise hell may ensue.
D2: Damage for mace to deal

Set the two constants at the top to be what tiles you want the chain and the mace head to use.

You can only have one mace enemy on a screen, and it shouldn't really be paired with enemies that shoot fireballs or anything (cause they won't work).
It can be attached to any enemy, so if you really like, you can give it to at tektite.

A normal, walking enemy works quite well (see the two screenshots), and if you're feeling really vicious you could use a darknut.
The 'Never Returns After Death' enemy editor flag creates a simple to set up custom mini-boss.