Observed arrival · 2026-08-24
Upkeep, the Rules-Aware MTG Test Bench
A Magic: The Gathering deck builder with collection tracking, legality checks, pricing data, and rules-aware playtesting.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
Field notes
The builder searches Scryfall’s card database while applying legality, pricing, and format checks for Commander, Standard, and Modern. Its Strategy Lab is described as a scripted-opponent simulator that can draw, cast, and attack, with the rules engine citing the Comprehensive Rules during play. The site recommends desktop use and identifies the tool as non-commercial and educational rather than a replacement for MTG Arena or Magic Online.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
⊠LoginAccess appeared gated
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
ƒJavaScriptBrowser-side code central
One card from the complete issue