Cheapest priced copy (Foundations Jumpstart): $0.35 at Card Kingdom, near mint, their price list as of .
Tethmos High Priest 
Creature — Cat Cleric · 2/3 · Uncommon · Journey into Nyx · #29
Heroic — Whenever you cast a spell that targets this creature, return target creature card with mana value 2 or less from your graveyard to the battlefield.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Foundations Jumpstart | 271 | Common | $0.35 | — |
| Journey into Nyx | 29 | Uncommon | $0.35 | $0.79 |
| Ultimate Masters | 40 | Common | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 26 April 2014Heroic abilities will trigger only once per spell, even if that spell targets the creature with the heroic ability multiple times.
- 26 April 2014Heroic abilities will resolve before the spell that caused them to trigger.
- 26 April 2014Heroic abilities won't trigger when a copy of a spell is created on the stack or when a spell's targets are changed to include a creature with a heroic ability.
- 7 December 2018If a card in a player's graveyard has {X} in its mana cost, X is considered to be 0.