Cheapest priced copy (Commander 2017): $0.35 at Card Kingdom, near mint, their price list as of .
Orator of Ojutai 
Creature — Bird Monk · 0/4 · Uncommon · Dragons of Tarkir · #28
As an additional cost to cast this spell, you may reveal a Dragon card from your hand.
Defender, flying
When this creature enters, if you revealed a Dragon card or controlled a Dragon as you cast this spell, draw a card.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2017 | 67 | Uncommon | $0.35 | — |
| Dragons of Tarkir | 28 | Uncommon | $0.35 | $0.49 |
| Friday Night Magic 2015 | 9 | Rare | — | $0.49 |
3 rulings from Wizards of the Coast
- 25 February 2015You can’t reveal more than one Dragon card to multiply the bonus. There is also no additional benefit for both revealing a Dragon card as an additional cost and controlling a Dragon as you cast the spell.
- 25 February 2015If one of these spells is copied, the controller of the copy will get the “Dragon bonus” only if a Dragon card was revealed as an additional cost. The copy wasn’t cast, so whether you controlled a Dragon won’t matter.
- 25 February 2015If you don’t reveal a Dragon card from your hand, you must control a Dragon as you are finished casting the spell to get the bonus. For example, if you lose control of your only Dragon while casting the spell (because, for example, you sacrificed it to activate a mana ability), you won’t get the bonus.