Multiformed The ancient skeleton manifests itself in Partial Form, but may use a bonus action to change to a Dispersed Form or back to their Partial Form. Each form has its own characteristics and its own method of attack.   Partial Form The ancient skeleton has only portions of its body remaining. It moves without making any sound and can often seem to disappear in its surrounding environment, as the eye cannot make a full form from the skeleton and so tries to dismiss it from view. The ancient skeleton gains a +6 Stealth skill bonus and all ranged attacks made against it are made with disadvantage.   Dispersed Form The ancient skeleton disperses the bone fragments that make up its partial form into a swirling whirlwind of bone shards. In this form, it gains resistance to Bludgeoning, Piercing, and Slashing damage and may occupy the space of another creature (and vice versa). It may move through any opening large enough for a tiny creature.