Cheapest priced copy (Strixhaven: School of Mages): $0.49 at Card Kingdom, near mint, their price list as of .
Pestilent Cauldron // Restorative Burst 
Artifact // Sorcery · Rare · Strixhaven: School of Mages · #154
{T}, Discard a card: Create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life."
{1}, {T}: Each opponent mills cards equal to the amount of life you gained this turn.
{4}, {T}: Exile four target cards from a single graveyard. Draw a card.
Return up to two target creature, land, and/or planeswalker cards from your graveyard to your hand. Each player gains 4 life. Exile Restorative Burst.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Strixhaven: School of Mages Promos | 154s | Rare | — | $0.69 |
| Strixhaven: School of Mages | 154 | Rare | $0.49 | $0.79 |
| Strixhaven: School of Mages | 327 | Rare | $0.69 | $0.79 |
3 rulings from Wizards of the Coast
- 16 April 2021You must be able to target four cards in a single graveyard in order to activate Pestilent Cauldron’s last ability.
- 16 April 2021Pestilent Cauldron’s second ability counts the total amount of life gained without considering any life you lost during that turn. For example, if you lost 2 life and gained 2 life earlier in the turn, your opponents will mill two cards.
- 16 April 2021You may cast Restorative Burst with no targets. If you do, each player will gain 4 life and you’ll exile Restorative Burst. However, if you choose one or two target cards, and each of those cards is an illegal target as Restorative Burst tries to resolve (usually because something else moved them in response), Restorative Burst won’t resolve and none of its effects will happen. No one will gain life, and Restorative Burst won’t be exiled.