"In the Weeds" the Dragalge
This is a twist on the commonly-used Toxic Spikes/Venoshock/Forced-switch-out-move set. This Dragalge is built for battles of attrition, and by my experience, it has usually been my last Pokemon standing.
Acid Armor is to raise your Defense after getting hit by something like Earthquake, or to set up on a weaker foe in preparation for a stronger threat.
With Adaptability, no EVs really need to be put into its Attack stats. Venoshock is boosted by Toxic Spikes, and Dragon Tail, a negative priority move, is there for forcing switches after laying down Toxic Spikes.
Quick Claw allows for Venoshock to be a potentially speedy and surprising finisher, while also allowing for a speedy Acid Armor in preparation for Earthquake or one last layer of Toxic Spikes before being fainted. Note that Dragon Tail will still go last, even if Quick Claw activates...