Code of Constraint
~$0.03 low · ~$0.36 high
Blue. Instant
Ravnica: Clue Edition #83 · Illustrated by Ekaterina Burmak
Ravnica: Clue Edition #83 · Illustrated by Ekaterina BurmakWhat is Code of Constraint worth?
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TCGplayer market prices in USD, updated October 14, 2026. Each price is for one printing and one finish.
Oracle 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
All 3 printings of Code of Constraint
| Printing | Rarity | Non-foil | Foil | Cardmarket (EUR) | My collection |
|---|---|---|---|---|---|
 The List plst #RNA-35· 2024uncommon· Cardmarket €0.09 | uncommon | $0.03 | No foil printing | €0.09 | |
 Ravnica: Clue Edition clu #83· 2024uncommon· Cardmarket €0.16 | uncommon | $0.08 | No foil printing | €0.16 | |
 Ravnica Allegiance rna #35· 2019uncommon· Cardmarket €0.11 · €0.22 foil | uncommon | $0.05 | $0.36 | €0.11€0.22 foil |
Prices are TCGplayer market prices in USD for each printing and finish, via Scryfall. They are a guide, not an appraisal.
Where to buy Code of Constraint
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Card details
- First printed
- 2019
- Printings
- 3
- Mana value
- 3
- EDHREC rank
- #26,708 on EDHREC (Commander popularity)
- Keywords
- Addendum
- Artist
- Ekaterina Burmak
Rulings (4)
2019-01-25
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.
2019-01-25
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.
2024-01-12
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.
2024-01-12
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.
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