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Opus — Whenever you cast an instant or sorcery spell, target player mills three cards. If five or more mana was spent to cast that spell, that player mills ten cards instead.
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.
| Archetype | Format | Inclusion | Copies | Decks (n) |
|---|---|---|---|---|
| Thrasios, Triton Hero / Vial Smasher the Fierce | cEDH | 100% | 1× | 2 |
| Phoenix | Modern | 91.7% | 3–4× | 12 |
| Mill | Modern | 27.8% | 2–4× | 18 |
| Malcolm, Keen-Eyed Navigator / Vial Smasher the Fierce | cEDH | 25% | 1× | 4 |
| Vivi Ornitier | cEDH | 16.7% | 1× | 6 |
| Kraum, Ludevic's Opus / Tymna the Weaver | cEDH | 6.3% | 1× | 16 |
| Dredge | Legacy | 5.6% | 3× | 18 |