Cheapest priced copy (Reality Fracture): $0.49 at Card Kingdom, near mint, their price list as of .
Null Summoner 
Creature — Human Warlock · 4/2 · Rare · Reality Fracture · #142
When this creature enters, if you cast it, target opponent reveals their hand. You choose a nonland card from it. Exile that card.
Threshold — As long as there are seven or more cards in your graveyard, you may cast the exiled card, and mana of any type can be spent to cast that spell.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.49 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Reality Fracture | 142 | Rare | $0.49 | $0.49 |
| Reality Fracture | 353 | Rare | $0.49 | $0.79 |
| PFRA | 142p | Rare | $0.59 | $0.79 |