Cheapest priced copy (Amonkhet): $0.35 at Card Kingdom, near mint, their price list as of .
Seeker of Insight 
Creature — Human Wizard · 1/3 · Common · Amonkhet · #69
{T}: Draw a card, then discard a card. Activate only if you've cast a noncreature spell this turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Amonkhet | 69 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 18 April 2017It doesn’t matter whether the noncreature spell has resolved or was countered, as long as it was cast. That spell may even still be on the stack when you activate Seeker of Insight’s ability.