Molten-Core Maestro

{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.

Rulings (2)

Mar 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.

Mar 20, 2026 · Molten-Core Maestro's last ability is not a mana ability. It uses the stack and can be responded to.

LegacyLegal

VintageLegal

ModernLegal

PioneerLegal

StandardLegal

PauperNot legal

PremodernNot legal

cEDHLegal

Where it’s played now

Inclusion by archetype

% of archetype's lists running it · last 30 days · n=442 decks

Archetype	Format	Inclusion	Copies	Decks (n)
Izzet Control	Standard	100%	3–4×	15
Other Lurrus	Vintage	3%	3×	33
Izzet Prowess	Standard	1.5%	1–2×	394

Data as of Jun 14, 2026 · MTGO + papercasthaven.com

Price