Even without the Bound Spirits, Bonescavenger’s Deathgrip is a stacked item due to the pet conversions and total speed.
Sadly, Dracarris is a bit of a meme, and that has to do more with the serious lack of skill points for Demo pet builds and fierce competition from Salazar’s Blade. At least Arcanist has Gate to Many Worlds for extra pets and good modifiers; Demo just doesn’t have enough good equipment to support pet builds nowadays.