Cheapest priced copy (The Lost Caverns of Ixalan Commander): $2.29 at Card Kingdom, near mint, their price list as of .
Zacama, Primal Calamity 
Legendary Creature — Elder Dinosaur · 9/9 · Mythic · Rivals of Ixalan · #174
Reach, vigilance, trample
When Zacama enters, if you cast it, untap all lands you control.
{2}{R}: Zacama deals 3 damage to target creature.
{2}{G}: Destroy target artifact or enchantment.
{2}{W}: You gain 3 life.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
9 printings · $2.29 to $23.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Masters | 365 | Rare | $2.49 | $4.49 |
| Commander Masters | 598 | Rare | — | — |
| Commander Masters | 691 | Rare | $6.99 | $12.99 |
| The Lost Caverns of Ixalan Commander | 296 | Mythic | $2.29 | — |
| Judge Gift Cards 2021 | 10 | Mythic | — | $23.99 |
| The List | RIX-174 | Mythic | $2.29 | — |
| Rivals of Ixalan Promos | 174p | Mythic | $5.99 | $10.99 |
| Rivals of Ixalan Promos | 174s | Mythic | — | $17.99 |
| Rivals of Ixalan | 174 | Mythic | $2.99 | $12.99 |
2 rulings from Wizards of the Coast
- 19 January 2018Zacama's triggered ability triggers if you cast it from any zone. It doesn't trigger if you put Zacama onto the battlefield without casting it.
- 28 July 2023Zacama's damage-dealing ability can be activated during combat, perhaps targeting a creature blocking it. If all creatures blocking Zacama are destroyed, its combat damage is assigned to the player, planeswalker, or battle it's attacking because of trample. If the blocking creatures are dealt nonlethal damage, that damage is considered when assigning trample damage.