A new type of worm that has 2 tails instead of 1.

If you get bisected by the Tsurugi while polymorphed into a long worm, you get cloned instead, with a tame copy of you splitting off.

The Tsurugi of Muramasa always bisects long worms, cutting them in half (unless they have only a head segment).

Hitting a tin of long worm or purple worm meat with an undead turning beam turns it into a can of worms, which when you apply or eat it creates a bunch of random w around you. Cans of worms can also be found randomly generated.

Long worms and pythons can be saddled and ridden as steeds, but only if you are a small monster.

Long worms should be much faster than they currently are, and they get a damage bonus for each tail segment that is lined up behind their head.