Cheapest priced copy (The List): $0.49 at Card Kingdom, near mint, their price list as of .
Gadwick, the Wizened 
Legendary Creature — Human Wizard · 3/3 · Rare · Throne of Eldraine Promos · #48p
When Gadwick enters, draw X cards.
Whenever you cast a blue spell, tap target nonland permanent an opponent controls.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.49 to $5.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 48 | Rare | $0.69 | $0.79 |
| Throne of Eldraine | 344 | Rare | $0.99 | $5.99 |
| Throne of Eldraine Promos | 48p | Rare | $0.69 | $1.49 |
| Throne of Eldraine Promos | 48s | Rare | — | $1.29 |
| The List | ELD-48 | Rare | $0.49 | — |
3 rulings from Wizards of the Coast
- 4 October 2019If Gadwick enters the battlefield without being cast, or if it was cast for a cost other than its mana cost, the value of X for its first ability is 0.
- 4 October 2019Gadwick's second ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered.
- 4 October 2019Gadwick's triggered ability won't trigger when you cast it because it's not on the battlefield yet.