Dormamus spenders

[Pyrosixtey]

Do to the wording if your lucky enough to keep rolling the attack again result is it essentially infinite as long as there are two character near each other. It appears the when you select the new target for the new attack that target becomes the new “original” target for when the bonus attack triggers. So I could ping between two guys till one of them dies correct? 

[Negoldar]

You are correct that there is no limit to the number of times Dark Miasma can trigger like there is for most of the other effects that grant additional attacks.

Incantation of Obliteration states that you cannot target a character that has been targeted by it this round when Dark Miasma triggers. You cannot alternate between two targets.