Cheapest priced copy (Modern Horizons): $0.49 at Card Kingdom, near mint, their price list as of .
Cabal Therapist 
Creature — Horror · 1/1 · Rare · Modern Horizons · #80
Menace
At the beginning of your first main phase, you may sacrifice a creature. When you do, choose a nonland card name, then target player reveals their hand and discards all cards with that name.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
1 printing · $0.49 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Modern Horizons | 80 | Rare | $0.49 | $1.49Out of stock |
One ruling from Wizards of the Coast
- 14 June 2019You name the card as Cabal Therapist’s reflexive triggered ability resolves, not as it’s put onto the stack. Then the targeted player reveals their hand and discards if appropriate. No player may choose to take actions between you naming the card and the targeted player revealing and discarding.