MTG Deckbuilder — Build the best decks from cards you already own

How scoring works

Grade

A through F. Quick read on overall deck quality, derived from the composite score below.

Composite

0–100 blend of synergy, curve fit, fill, castability and wincon coverage. This is the number we sort decks by.

Synergy %

Share of the deck's nonland cards that score ≥ 2 against the archetype's signals. Higher means more cards pull in the same direction.

Castability

Hypergeometric probability that each spell can be cast on-curve given your mana base.

01 / Collection & Format

Format

Loading formats...

CSV Collection (ManaBox export)

or drag & drop .csv here

✔ Collection uploaded — rows detected

02 / Preferences

Play Style

Color Preferences

Archetype Preferences

The builder will scan your collection and pick the strongest archetypes automatically.

Only building decks for selected archetypes.

Lock specific cards (optional)

Commander

Searches valid commanders for this format. The build still checks that your uploaded collection owns the selected card.

Searching...

No commander match — why?

Required Card

Searches any legal card for the format. For v1 this lock is nonland-only, and the build fails fast if your upload does not own the selected printing.

Searching...

Constrained builds automatically cap the number of generated decks so the builder spends its budget on fewer higher-quality results.

Advanced Parameters

Minimum Grade

(filters out weaker decks)

Language

Include Foils

Yes

Min Deck Price ($)

Max Deck Price ($)

Uses your CSV purchase prices as per-card values. Decks outside the selected range are excluded from results.

Card Condition (leave empty for all)

Returns your top 5 decks for the selected format.

Waiting for format options to finish loading.

Complete the security check above to enable Build Decks.

03 / Build Progress

G–