Disintegrator Dragon

For effects targeting creatures by type, disintegrator dragons count as both dragons and constructs (whichever allows an ability to affect them for abilities that affect only one of those types, and whichever is worse for abilities that affect both types). They receive a +2 racial bonus to saving throws against disease, mind-affecting effects, and poison unless those effects specifically target constructs. Additionally, they’re protected from environmental effects as if wearing armor (of an item level equal to the dragon’s CR) with its environmental protection active.

A disintegrator dragon’s breath weapon and disintegrator cannon can completely reduce a target to only traces of fine dust. If either ability reduces a creature to 0 Hit Points, that creature’s body is destroyed (as per disintegrate). A creature can negate the utter destruction of their body by spending all its remaining Resolve Points; this leaves it at 0 Hit Points and unconscious but stable.

A disintegrator dragon’s head is built around a destructive proton-decoupler cannon that provides the dragon with a ranged attack that deals acid damage, targets EAC, has a range increment equal to their breath weapon’s maximum range and the corrode 2d6 critical effect (increase to 3d6 at CR 7, 4d6 at CR 11, 5d6 at CR 17, and 6d6 at CR 25), and the line and unwieldy weapon special properties.