Cheapest priced copy (Commander 2013): $0.49 at Card Kingdom, near mint, their price list as of .
Naya Soulbeast 
Creature — Beast · 0/0 · Rare · Commander 2013 · #157
When you cast this spell, each player reveals the top card of their library. This creature enters with X +1/+1 counters on it, where X is the total mana value of all cards revealed this way.
Trample
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2013 | 157 | Rare | $0.49 | — |
One ruling from Wizards of the Coast
- 17 October 2013Naya Soulbeast's last ability triggers while Naya Soulbeast is on the stack. After that ability resolves, players will be able to cast spells and activate abilities knowing how many counters Naya Soulbeast will enter the battlefield with if it resolves.