One entry per skinned ModelMeshPart of a DrawAnimatedModelInstanced command — or one per MERGED part group when the model has mergeable skinned parts (off-GL; depth binds no material state, so merged geometry is always valid here). Shares the command's per-instance transforms + flat bone palettes (InstanceCount * boneCount, instance-major). Rendered via the depth effect's DepthSkinnedInstanced technique (palette texture + two-stream bind); on the OpenGL backend (no vertex texture fetch) the pass falls back to per-instance DepthSkinned draws. Colors/material overrides are irrelevant to depth and not carried. Like the other part-based casters, no world-space bounds — drawn unconditionally.