Cheapest priced copy (Outlaws of Thunder Junction Commander): $0.59 at Card Kingdom, near mint, their price list as of .
Veinwitch Coven 
Creature — Vampire Warlock · 3/3 · Rare · Secrets of Strixhaven Commander · #228
Menace
Whenever you gain life, you may pay {B}. If you do, return target creature card from your graveyard to your hand.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
4 printings · $0.59 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2021 | 46 | Rare | $0.69 | — |
| Commander 2021 | 373 | Rare | $2.49 | — |
| Outlaws of Thunder Junction Commander | 151 | Rare | $0.59 | — |
| Secrets of Strixhaven Commander | 228 | Rare | $0.59 | — |
4 rulings from Wizards of the Coast
- 16 April 2021Each creature with lifelink dealing combat damage causes a separate life-gaining event. For example, if two creatures you control with lifelink deal combat damage at the same time, a "whenever you gain life" ability will trigger twice. However, if a single creature you control with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once.
- 16 April 2021An ability that triggers "whenever you gain life" triggers just once for each life-gaining event, no matter how much life you gain.
- 16 April 2021If you gain an amount of life "for each" of something, that life is gained as one event and the ability will trigger only once.
- 16 April 2021You may only pay {B} once for each life gain event.