# Derek Fontaine, Senior Software Engineer at Coalescent Systems (140 employees) — read of mtg-bench-deck-optimizer, June 13 2026

> 8 years writing TypeScript, occasional indie hacker, FNM player at my local LGS every other Friday. My 9-year-old just started drafting with me. I have three half-shipped side projects sitting in Vercel.

## How I got here

Saw someone post a screenshot of the scoring breakdown on r/magicTCG and someone else dropped it in the side-projects channel of a Slack group I'm in for indie hackers. The framing "AI deck optimizer" plus the Fermi math made me want to see what they were actually claiming. I wasn't searching for this. It was handed to me with mild skepticism already attached.

## What I clicked first

The three feature bullets pulled me in for about 20 seconds. "Sideboard Tuner — Suggests sideboard cards optimized for your local meta" is actually a genuinely interesting wedge because every other optimizer I've seen ignores local meta entirely. That's real. That's a real pain point. I play a store where Burn is almost nonexistent but Dredge shows up every week, and every sideboard guide online treats them equally. So that line landed.

Then I scrolled down and realized this isn't a live product. It's a dossier for sale.

## Where I paused

The scoring breakdown. "1 in 6 meaningful-success odds (Fermi)" printed right there in the hero alongside the negative year-one projection. That's genuinely unusual. Most idea marketplaces sell you confidence. These people are selling you a candid 1-in-6 shot and asking you to price that in yourself. I sat with that for a minute. I don't know if it's real honesty or a rhetorical move designed to feel honest, but it made me read the rest of the page more carefully than I would have otherwise.

## What I distrusted

"financial upside: 1/10" as a concern but still a $5/$99 product for sale is a weird tension. If the builder of the dossier knows the upside is essentially a 1, why am I buying a build kit for it? The copy says "Honest disclosure: we don't have live customers on this idea yet" which I appreciate, but then it goes right into selling me a dossier that includes "first 7 build tasks" and "email drip." If no one has validated the pain intensity (scored 4/10 on their own rubric), what is the email drip based on? Who confirmed these people convert?

Also "Meta-Aware Optimizer... based on tournament results and ladder data" -- which ladder? MTGO? MTG Arena? EDHREC? These are completely different audiences with different retention curves and willingness to pay. The page doesn't distinguish them at all. That's not a small gap.

## What would convince me

One live example of someone who bought a dossier from Wishdeal, shipped the thing, and made back their $99 within 6 months. Not a testimonial that says "great dossier!" A before-and-after: "Marcus bought this, built the sideboard tuner as a Chrome extension for MTGO, charged $4/month, hit 80 subscribers in 60 days." That format. Numbers I can sanity-check against my own experience of how slow MTG audiences move.

Alternatively: show me that the "local meta" feature has actually been requested somewhere. A Reddit thread. A Discord screenshot. Something that proves someone other than an AI said "I wish my sideboard tool knew what my LGS was running."

## What I'd ask in an email reply

1. The sideboard tuner is the most differentiated claim -- has anyone tested whether players actually input their local meta manually, or do they bounce when they see that friction?

2. The year-1 take-home is negative $12,576 -- what's the cost model underneath that? Is that assuming paid ads, or is that a salary imputation for founder time, or something else entirely?

3. The $99 "adopt" tier includes "working code starter" -- what stack, what's the actual state of the code, and does it connect to any real data source or is it scaffolding that still needs me to find and license tournament data?

## Verdict: on-the-fence

The honesty framing is doing real work here and the sideboard-tuner wedge is legitimately interesting. But I can't tell if I'm buying a real insight or a well-packaged maybe, and at 1/10 financial upside by their own score, I'd want to see one live example before spending even $5.

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*Memo by skeptic persona, generated 2026-06-13. Studio breaks own self-grading loop.*