Cheapest priced copy (Dragons of Tarkir): $0.99 at Card Kingdom, near mint, their price list as of .
Ojutai Exemplars 
Creature — Human Monk · 4/4 · Mythic · Dragons of Tarkir · #27
Whenever you cast a noncreature spell, choose one —
• Tap target creature.
• This creature gains first strike and lifelink until end of turn.
• Exile this creature, then return it to the battlefield tapped under its owner's control.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.99 to $1.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Dragons of Tarkir | 27 | Mythic | $0.99 | $1.99 |
| Foundations Jumpstart | 232 | Mythic | $0.99 | — |
2 rulings from Wizards of the Coast
- 25 February 2015After the ability returns Ojutai Exemplars to the battlefield, it will be a new object with no connection to the Ojutai Exemplars that left the battlefield. It won't be in combat or have any additional abilities it may have had when it left the battlefield. Any +1/+1 counters on it or Auras attached to it are removed.
- 25 February 2015If Ojutai Exemplars leaves the battlefield in response to its ability with the third mode chosen, that ability won't return Ojutai Exemplars to the battlefield. It will stay wherever it is.