Cheapest priced copy (Midnight Hunt Commander): $5.49 at Card Kingdom, near mint, their price list as of .
Heronblade Elite 
Creature — Human Warrior · 1/1 · Rare · Midnight Hunt Commander · #64
Vigilance
Whenever another Human you control enters, put a +1/+1 counter on this creature.
{T}: Add X mana of any one color, where X is this creature's power.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $5.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Midnight Hunt Commander | 26 | Rare | $5.49 | — |
| Midnight Hunt Commander | 64 | Rare | $5.49 | — |
One ruling from Wizards of the Coast
- 24 September 2021Heronblade Elite's last ability is a mana ability. It doesn't use the stack and can't be responded to. If Heronblade Elite's power is 0 or less at the time the ability resolves, no mana is added.