The Acorn Cauldron

Beginner · 5 min read · By Chitmunk Team · Updated May 11, 2026

The Acorn Cauldron is Chitmunk's recipe-driven AI art tool: one prompt template with {{Column Name}} tokens, one CSV, one batch of card art for the whole deck. A style anchor keeps every card visually consistent — think "ink and watercolor fantasy illustration" as the throughline across 60 monster portraits. Re-roll individual cards without re-rolling the deck. The Cauldron uses your AI credit budget (10 free with Common, 100 with Rare, 500 with Epic). This guide covers writing a recipe, brewing the deck, and re-rolling individual cards.

Think of it as prototyping art. The Cauldron gives you placeholder illustrations you can playtest with right now, so you can see how your game feels with real imagery instead of blank rectangles. When your game is ready for production, commission an artist to replace the placeholders with professional work. Until then, every card gets a face.

How It Works

The Acorn Cauldron is a five-step wizard. Each step builds on the last, like assembling a recipe before you cook.

1. Style — Pick an art style that applies to your whole deck. Classic Fantasy, Watercolor, Comic Book, Pixel Art, Art Nouveau, and more. The style you choose here seasons every image the Cauldron produces, so your cards look like they belong together.
2. Ingredients — This is where the magic happens. Your spreadsheet columns are ingredients: click or drag them into the recipe editor as blue pills. Add prompt fragments from the built-in library (130+ proven templates across Characters, Creatures, Locations, Sci-Fi, Horror, Nature, and more). Any free text you type between the pills stays the same for every card — only the pill values change per row.
3. Season — Choose a mood for the whole batch: Dramatic, Serene, Ethereal, Whimsical, and others. Review the negative prompt (things you want the AI to avoid) and tweak it if needed.
4. Cauldron — Pick your AI model. Each cauldron trades speed, cost, and quality differently. (More on this below.)
5. Serve — Preview the assembled prompt for any card in your deck, generate a single test image to check the recipe, or batch-generate art for every card at once.

Writing Good Recipes

The recipe is the heart of the Cauldron. A well-written recipe produces better art with less fiddling. Here are the key principles:

• Use descriptive language, not keywords. "A fearsome dragon perched on a rocky peak, wings spread wide against a stormy sky" works far better than "dragon, rock, fire, wings."
• Use {{Column}} pills for the parts that change per card. If your spreadsheet has a Name column and a Type column, drop those pills into the recipe so each card gets its own subject.
• Keep static text for the parts that stay consistent. Pose, framing, detail level, and composition should be the same across the deck. That consistency is what makes your cards look like a set.
• Raid the Prompt Fragments pantry. The built-in library has 130+ proven templates organized by theme — Characters, Creatures, Locations, Items, Actions, Horror, Sci-Fi, Nature. Drag them into your recipe as starting points and customize from there.
• Start with a starter recipe. The Cauldron includes pre-built recipes for common card types: Character Portrait, Creature, Location, Item, and Action. Pick the closest one and tweak it rather than starting from scratch.

Speed and Cost

Generation runs on Cloudflare Workers AI. Each image takes about two seconds and costs credits proportional to its area:

• A 512×512 thumbnail costs 5 credits.
• A 1024×1024 card-sized image costs 20 credits.
• A 2048×2048 hero image costs 80 credits.

Rare gives you 100 credits per month; Epic gives you 500. Credits reset on your subscription anniversary.

Tips for Board Game Card Art

• Leave room for text. The Card Layout prompt fragments are designed to place the subject with space for title bars, stat boxes, and flavor text overlays. Use them.
• Pick one style and stick with it. Consistency across a deck matters more than any single image looking spectacular. A unified watercolor deck feels more professional than a mix of stunning but mismatched styles.
• Test one card, then batch the rest. Generate 3–4 variations of a key card to dial in framing, color palette, and composition. Once you are happy, batch-generate the full deck in one go.
• Art generates at your element's exact dimensions. No wasted pixels, no awkward cropping. The Cauldron reads the size of your image element and requests art at that exact resolution.