Grim.Cards — MTG Deck Benchmark and Power Score

Grim.Cards helps Magic: The Gathering players stress-test their custom decklists by simulating them against meta decks using the Forge engine. Get a data-driven Power Score (0–100), head-to-head matchup breakdowns, and AI-powered card coaching — all free.

How it works

Upload your Commander or Standard decklist as a CSV. Grim.Cards runs AI-vs-AI simulations against a curated set of meta decks and returns a Power Score, win-rate breakdown, and card-level coaching suggestions.

Features

• Deck Power Score (0–100) and letter grade (S/A/B/C/D/F)
• Win-rate breakdown across Commander and Standard meta decks
• Card-level coaching and counterfactual suggestions
• Gauntlet leaderboard ranked by average power score
• Completely free — no account required to browse results