WoW
The twelve side buttons map to WoW Action Bar 1: keys 1 through 0, minus, and equals. Assign that map in Razer Synapse on the Naga or in Redragon's dual-mode software on the M913. Put your rotation on the row your thumb rests on, then stack cooldowns and defensives on Shift or Ctrl hotbars.
The Naga adds two buttons beside left-click plus tilt-left and tilt-right on the wheel, which several r/wow owners use for interrupt, stun, mount, or focus without leaving the grid. The M913 covers the same twelve-key grid without those extras; owner reports say its DPI keys stay DPI functions in the dual-mode software. Blizzard's input-broadcasting rules mean one press should trigger one action, so avoid macros that fire multiple casts. Follow the WoW MMO mouse setup guide for the full mapping walkthrough and see the WoW setup hub for wider desk context.
AA anxiety shows up in budget WoW threads: keep a charged spare AA for raid nights, or pick the M913 if USB-C recharge while playing matters more. Budget durability folklore also names Redragon as a replace-when-it-wears choice versus paying for Razer's Synapse ecosystem.
FFXIV
Map a twelve-slot hotbar 1:1 to the side grid. Shift and Ctrl hotbars stack the same way; the Naga's extra top buttons can take target or mount keys outside the grid.