Lean, directive prose that assumes Claude's competence — it never explains what a deck, chart, or table is, and every line (the variant table, the 'quiet disaster' caution, the flagged-items rationale) earns its place rather than padding.

Concrete, executable guidance throughout: a named tool call (ask_user_question), a variant-matching table with real examples, a copy-ready change-list format, and per-element edit rules (shape run, table cell, chart series) — fully actionable for an instruction-only skill.

A clearly sequenced four-phase process with an explicit approval gate ('Don't edit until the user has seen the plan') and a verification checkpoint ('Run standard visual verification checks on every edited slide') on a destructive operation, with a report-back feedback loop closing it out.

Well-organized into clearly headed single-level sections (Environment check, Phases 1–4, What you're not doing) with no nested or external references; for this focused, self-contained task the section structure is sufficient and appropriately scoped.

Names the domain ('Updates a presentation with new numbers') and lists concrete refresh actions — 'quarterly refreshes, earnings updates, comp rolls, rebased market data' — plus the core action of swapping figures, matching the multiple-specific-actions anchor rather than the single-domain anchor at 2.

Explicitly answers both what ('swap figures across an existing deck without rebuilding it') and when (a 'Use whenever the user asks to...' clause with explicit triggers), satisfying the what-AND-when anchor.

Quotes natural phrases a user would actually say — 'update the deck with Q4 numbers', 'refresh the comps', 'roll this forward', 'change all the $485M to $512M' — giving strong coverage of common variations, matching the good-coverage anchor.

Clear niche — updating figures in an existing deck 'without rebuilding it' — distinguishes it from general presentation-creation/editing skills, with distinct triggers unlikely to fire for the wrong skill.