Cheapest priced copy (Duskmourn: House of Horror Commander): $0.49 at Card Kingdom, near mint, their price list as of .
Life Insurance 
Enchantment · Rare · Outlaws of Thunder Junction Commander · #233
Extort (Whenever you cast a spell, you may pay {W/B}. If you do, each opponent loses 1 life and you gain that much life.)
Whenever a nontoken creature dies, you lose 1 life and create a Treasure token.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
5 printings · $0.49 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror Commander | 224 | Rare | $0.49 | — |
| New Capenna Commander | 74 | Rare | $0.49 | — |
| New Capenna Commander | 174 | Rare | $1.29 | — |
| Outlaws of Thunder Junction Commander | 233 | Rare | $0.49 | — |
| New Capenna Commander Promos | 74p | Rare | — | $15.99 |
4 rulings from Wizards of the Coast
- 12 January 2024You may pay {W/B} a maximum of one time for each extort triggered ability. You decide whether to pay when the ability resolves.
- 12 January 2024The extort ability resolves before the spell that caused it to trigger. The ability resolves even if that spell is countered.
- 12 January 2024The extort ability doesn't target any player.
- 12 January 2024The amount of life you gain from extort is based on the total amount of life lost, not necessarily the number of opponents you have. For example, if your opponent's life total can't change (perhaps because that player controls Platinum Emperion), you won't gain any life.