Mirrodin Besieged set symbol
To spot Mirrodin Besieged, start with the expansion glyph (code MBS) rather than the artwork. Reprints keep famous art under new symbols.
Set code
mbs
Released
Feb 2011
Cards
155
Type
Expansion
Lookalikes & traps
Borderless and showcase frames of Mirrodin Besieged / Blightsteel Colossus still need the MBS line; a fancy frame is not a different set by itself. Also watch foil vs nonfoil: sheen does not change which set Mirrodin Besieged is.
Confirm after the icon
Bottom information line should show collector number + set code MBS (and usually a C/U/R/M rarity letter). On Mirrodin Besieged / Blightsteel Colossus, mismatch between listing title and MBS is the usual bait-and-switch.
How to identify Mirrodin Besieged cards
- 1
Locate the Mirrodin Besieged set mark (MBS) before you trust the card name — reprints reuse names across products.
- 2
Read rarity from symbol color on Mirrodin Besieged: black common, silver uncommon, gold rare, orange mythic — foil sheen does not change it.
- 3
Verify MBS on the bottom line; listings that only show the card name are where Mirrodin Besieged get mixed with siblings.
- 4
If icon and MBS still disagree with a marketplace title, scan with Tappr rather than guessing from art.
Rarity by symbol color
Modern rarity colors on the Mirrodin Besieged symbol: black common (white only in rare one-set exceptions like Dominaria), silver uncommon, gold rare, orange/red-orange mythic. Foil, showcase, and borderless treatments keep the same rarity color — they change finish/frame, not the C/U/R/M letter.
Legend shows the modern post-Exodus palette. Pre-Exodus sets and special rarities (for example Time Spiral purple timeshifted) follow the rarity reading above — not this swatch row alone.
FAQ
What does the Mirrodin Besieged set symbol look like?
To spot Mirrodin Besieged, start with the expansion glyph (code MBS) rather than the artwork. Reprints keep famous art under new symbols. Reprints of Mirrodin Besieged / Blightsteel Colossus under other codes keep different glyphs — match the icon, then MBS.
What is the Mirrodin Besieged set code?
The set code is MBS. It appears with the collector number on modern cards. If you see a different code, you are not holding the Mirrodin Besieged printing even when the name matches.
How do I read rarity on a Mirrodin Besieged card?
Modern rarity colors on the Mirrodin Besieged symbol: black common (white only in rare one-set exceptions like Dominaria), silver uncommon, gold rare, orange/red-orange mythic. Foil, showcase, and borderless treatments keep the same rarity color — they change finish/frame, not the C/U/R/M letter.
How do I confirm a Mirrodin Besieged card quickly?
Icon match → rarity reading for this era → MBS + collector number. Borderless and showcase frames of Mirrodin Besieged / Blightsteel Colossus still need the MBS line; a fancy frame is not a different set by itself.. Tappr can finish the printing match when the listing is ambiguous.
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