Every Magic set has its expansion symbol, and custom sets deserve their own. Magic Set Editor does not make you draw one in an external graphics program and paste it in: it ships with a built-in, vector-based symbol editor, described in the project’s own SourceForge screenshots as an ‘Advanced symbol editor, vector based’. This guide explains how set symbols work in MSE and how to make and apply your own.
The built-in vector symbol editor
Vector-based means the symbol is stored as shapes rather than as a fixed-size picture, so it stays sharp at the small size a set symbol is printed at. Inside the editor you build the symbol from drawn shapes, position it, and save it as part of your set’s identity. For a first symbol, keep it bold and simple: a set symbol is only ever seen tiny, in the type line area of the card, and fine detail simply disappears at that size.
The .mse-symbol file format
Symbols are stored in MSE’s own .mse-symbol file type, so a finished symbol can be saved, shared and reused across sets instead of being redrawn each time. MSE also has a symbol-font package type, .mse-symbol-font, used for symbol fonts — collections that map characters to symbols, which is how text-like symbols are supplied to templates. When you receive a symbol as a file rather than drawing it, it will normally arrive in one of these two forms.
Colouring by rarity
A set symbol is not just a logo: on a finished card it is coloured by the card’s rarity, which is how players read rarity at a glance. By convention, the symbol takes a different colour for each rarity tier, so the same symbol shape appears in one colour on a common, another on an uncommon, and so on through rare and mythic. When you design a symbol, test it as a filled silhouette in several colours — a shape that only works in one colour will fail on half your set.
A known historical bug: wide symbols being shrunk
If you use an older MSE version and your wide symbol looks squashed, that is a real, documented bug — not your artwork. The author’s changelog records that version 2.1.1 fixed ‘wide set symbols being shrunk down’ (issue #68). The fix is simply to run 2.1.1 or later (the final upstream release is 2.1.2). This is a good example of why the version line matters; our templates hub and template guides assume a current program and pack.
Apply the symbol to your set
- Create or open your symbol in the built-in editor and save it.
- Assign the symbol in your set’s settings so every card in the set carries it.
- Check one card at each rarity to confirm the colouring reads correctly.
- Export a test card as an image (MSE exports png, jpg, bmp and tiff) and view it at real size before committing to the design.
A clean, bold symbol is one of the fastest ways to make a custom set look finished. Pair it with correctly installed fonts and templates and the whole card comes together.