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Molten-Core Maestro

Secrets of Strixhaven (SOS)

{1}{R}

Creature — Goblin Bard

Menace Opus — Whenever you cast an instant or sorcery spell, put a +1/+1 counter on this creature. If five or more mana was spent to cast that spell, add an amount of {R} equal to this creature's power.
Plays as
Spell Payoff
Format legality

Constructed

StandardLegal
PioneerLegal
ModernLegal
LegacyLegal
VintageLegal
PauperNot legal

Commander

CommanderLegal
Pauper CommanderNot legal
Duel CommanderLegal
PreDHNot legal
OathbreakerLegal
Tiny LeadersLegal

Arena

AlchemyLegal
HistoricLegal
TimelessLegal
BrawlLegal
Standard BrawlLegal
Competitive BrawlLegal
GladiatorLegal

Other

PremodernNot legal
Old SchoolNot legal
Penny DreadfulNot legal
Future StandardLegal

Used in 18 known combosEDHREC #8,357

Versions

3 printings · from $0.56

Secrets of Strixhaven
2026#125CheapestIn products
Secrets of Strixhaven
2026#335In products
Extended Art

Rulings

2 · latest Mar 20, 2026
  • WotCMar 20, 2026

    An opus ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered or otherwise leaves the stack.

  • WotCMar 20, 2026

    Molten-Core Maestro's last ability is not a mana ability. It uses the stack and can be responded to.