Derelor
Creature — Thrull
Black spells you cast cost 
more to cast.
- CMC
- 4
- Mana cost
- Color identity
- B
- Rarity
- rare
- Set
- Classic Sixth Edition
- Price
- $0.37
- EDHREC rank
- #29701
Derelor is a 4/4 for four mana — respectable stats — but it taxes every black spell you cast by one additional generic mana, a drawback so punishing in a black-heavy deck that it functionally reads as "your commander costs one more." Run it only if you're actively exploiting the downside, because as a vanilla threat it's strictly worse than nothing.
Format Analysis
Where it lives, where it can’t
| Format | Verdict |
|---|---|
| commander | legal |
| legacy | legal |
| modern | not legal |
| pioneer | not legal |
| standard | not legal |
| vintage | legal |
| pauper | not legal |
| oathbreaker | legal |
Derelor is legal in Commander, Legacy, Vintage, and Oathbreaker, and sees essentially zero competitive play in any of them. In Commander, the self-tax makes Derelor a liability in any deck running more than a handful of black spells — which is most black decks. Legacy and Vintage have enough broken things happening that a 4/4 with a drawback doesn't register. The only realistic home is a deck that weaponizes the downside, such as a build centered on taxing opponents symmetrically or one that somehow turns the black-spell surcharge into an advantage — a narrow niche with better options available.
Key Combos
Combo lines featuring this card
Price Context
Current price
$0.37 bulk tier
At $0.37, Derelor sits firmly in bulk territory, and that price reflects the card's playability ceiling accurately. Don't expect movement in either direction — it's not a hidden gem, and it's not going lower.
Explore
Sources
Mentioned
Updated . Data from Scryfall, EDHREC, and Commander Spellbook.