Cheapest priced copy (The Lost Caverns of Ixalan Commander): $0.99 at Card Kingdom, near mint, their price list as of .
Kumena, Tyrant of Orazca 
Legendary Creature — Merfolk Shaman · 2/4 · Mythic · Rivals of Ixalan · #162
Tap another untapped Merfolk you control: Kumena can't be blocked this turn.
Tap three untapped Merfolk you control: Draw a card.
Tap five untapped Merfolk you control: Put a +1/+1 counter on each Merfolk you control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.99 to $24.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Lost Caverns of Ixalan Commander | 274 | Mythic | $0.99 | — |
| Rivals of Ixalan Promos | 162s | Mythic | — | $11.99 |
| Rivals of Ixalan | 162 | Mythic | $1.29 | $9.99 |
| Secret Lair Drop | 1412 | Mythic | $18.99 | — |
| Secret Lair Drop | 1412★ | Mythic | — | $24.99 |
2 rulings from Wizards of the Coast
- 19 January 2018Activating Kumena's first ability after it has become blocked won't cause it to become unblocked.
- 19 January 2018To activate Kumena's abilities, you may tap any untapped Merfolk you control, including one you haven't controlled continuously since the beginning of your most recent turn. (Note that tapping the creature doesn't use {T} [the tap symbol].) For Kumena's second and third abilities, this includes Kumena itself.