Code of Constraint
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Magic: The Gathering
Mana cost
Ravnica AllegianceRNA · #35
- Card type
- Instant
- Rarity
- Uncommon
- Indicative price
- 0.11 € · ★ 0.22 € · 0.06 $ · ★ 0.36 $
- Mana value
- 3
- Colour
- Blue
Card text
Target creature gets -4/-0 until end of turn. Draw a card. Addendum — If you cast this spell during your main phase, tap that creature and it doesn't untap during its controller's next untap step.
Format legality
- BrawlLegal
- CommanderLegal
- DuelLegal
- GladiatorLegal
- HistoricLegal
- LegacyLegal
- ModernLegal
- OathbreakerLegal
- PioneerLegal
- TimelessLegal
- VintageLegal
Legalities follow the imported catalogue; check format rules before a tournament.
Data imported on 2026-10-06 (UTC).
Indicative Scryfall prices, updated daily. ★: foil; ★ E: etched foil. EUR and USD represent different markets.
Printing information
- Illustrator
- Ekaterina Burmak
- Card language
- English
- Release date
- 2019-01-25
Rulings
Code of Constraint can target a creature that's already tapped. If you cast it during your main phase, that creature won't untap during its controller's next untap step.
If the target creature is an illegal target by the time Code of Constraint tries to resolve, the spell doesn't resolve. You don't draw a card.
Addendum abilities of instant spells apply while the spell is resolving, not immediately after casting it. If the spell is countered, you don't get the addendum bonus.
If an effect copies a spell with an addendum ability while it's on the stack, the copy wasn't cast at all, so you won't get the addendum bonus.
