∆Spellgraph
Commanderdeckbuilding platform

Find the right card.
Build the right deck.

Search every Magic card, get synergy recommendations for your commander, and track your deck health — all in one place.

Search cards, types, oracle text, sets…
Guided or freeform building

Start from a proven template and fill it in step by step — ramp, draw, removal, wincons, lands last — or build freeform and let the plan track your progress. Either way you always know what the deck is still missing.

Synergy engine

Every card is scored against your commander using EDHREC play rates and co-occurrence data. Top picks surface per build step, with the reason a card earns its slot.

Card exploration graph

Cards sit in a graph of replacements, same-effect options, bundles and cost profiles. Hop from one to the next to find the upgrade or budget swap you didn't know existed.

Custom cards & commanders

Design your own cards, lead a deck with a custom commander, and build around it with the same search, synergy and templates the real ones get.

Scryfall syntax + effect-block search

Full Scryfall syntax for precise queries, plus a search by what a card does — proliferate, wheel, tutor, ramp — built on the same effect blocks that power the graph.

Test hands & test packages

Goldfish opening hands with keep-or-mulligan drills, then swap whole packages of cards in and out to compare builds side by side — before you buy a single card.

Already have a decklist?

Import from Moxfield, Arena export, MTGO, or any plain-text format.

Import a deck