Cheapest priced copy (Commander Legends): $0.35 at Card Kingdom, near mint, their price list as of .
Vow of Lightning 
Enchantment — Aura · Uncommon · Murders at Karlov Manor Commander · #164
Enchant creature
Enchanted creature gets +2/+2, has first strike, and can't attack you or planeswalkers you control.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
8 printings · $0.35 to $0.59 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Anthology | 89 | Uncommon | $0.39 | — |
| Commander 2011 | 138 | Uncommon | $0.59 | — |
| Commander Legends | 209 | Uncommon | $0.35 | $0.49 |
| Explorers of Ixalan | 30 | Uncommon | $0.35 | — |
| Game Night: Free-for-All | 88 | Uncommon | $0.35 | — |
| Murders at Karlov Manor Commander | 164 | Uncommon | $0.35 | — |
| The List | CMR-209 | Uncommon | $0.35 | — |
| The List | GN3-88 | Uncommon | — | — |