Cheapest priced copy (Rivals of Ixalan): $1.79 at Card Kingdom, near mint, their price list as of .
Tetzimoc, Primal Death 
Legendary Creature — Elder Dinosaur · 6/6 · Rare · Rivals of Ixalan · #86
Deathtouch
{B}, Reveal this card from your hand: Put a prey counter on target creature. Activate only during your turn.
When Tetzimoc enters, destroy each creature your opponents control with a prey counter on it.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $1.79 to $19.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Rivals of Ixalan Promos | 86p | Rare | $1.99 | $19.99 |
| Rivals of Ixalan Promos | 86s | Rare | — | $3.49 |
| Rivals of Ixalan | 86 | Rare | $1.79 | $3.99 |
2 rulings from Wizards of the Coast
- 19 January 2018Tetzimoc's triggered ability doesn't care how a prey counter got onto a creature an opponent controls or whose Tetzimoc put that counter on the creature. Tetzimoc is happy to eat all the opponent's prey it can see.
- 19 January 2018You can activate Tetzimoc's activated ability more than once during your turn.