Cheapest priced copy (Starter Commander Decks): $0.59 at Card Kingdom, near mint, their price list as of .
Kaervek the Merciless 
Legendary Creature — Human Shaman · 5/4 · Rare · Time Spiral · #242
Whenever an opponent casts a spell, Kaervek deals damage equal to that spell's mana value to any target.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
7 printings · $0.59 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Double Masters 2022 | 236 | Rare | $0.69 | $1.99 |
| Double Masters 2022 | 512 | Rare | — | — |
| Archenemy | 88 | Rare | $1.49 | — |
| Duskmourn: House of Horror Commander | 222 | Rare | $1.29 | — |
| Starter Commander Decks | 233 | Rare | $0.59 | — |
| Time Spiral | 242 | Rare | $0.99 | $6.99 |
| Time Spiral Remastered | 257 | Rare | $0.69 | $2.49 |
3 rulings from Wizards of the Coast
- 19 March 2021For spells with {X} in their mana costs, use the value chosen for X to determine the spell's mana value.
- 19 March 2021An ability that triggers when a player casts a spell resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
- 19 March 2021Alternative costs, additional costs, and cost reductions don't change a spell's mana value. Its mana value is still based on its mana cost.