Solo dev + 3 months + Claude as pair-programmer = this.
AI Deck Builder: describe your playstyle & budget, get a full 99-card Commander deck with reasoning (Gemini Pro).
Deep Deck Audit: paste your list, get a real breakdown with specific cut suggestions.
AI Rules Chat: rules questions answered mid-game.
Mulligan Simulator: Monte Carlo across thousands of hands.
Free. No subscription. Optional rewarded ads or bring your own API key.