FOILCheapest priced copy (Theros): $1.29 at Card Kingdom, near mint, their price list as of .
Prophet of Kruphix 
Creature — Human Wizard · 2/3 · Rare · Magic 2015 Clash Pack · #5
Untap all creatures and lands you control during each other player's untap step.
You may cast creature spells as though they had flash.
Legal inPioneerModernLegacyVintage
Banned inCommander
Not legal inBrawlStandardPauper
2 printings · $1.29 to $7.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Magic 2015 Clash Pack | 5 | Rare | — | $5.49 |
| Theros | 199 | Rare | $1.29 | $7.99 |
5 rulings from Wizards of the Coast
- 15 September 2013Controlling more than one Prophet of Kruphix doesn't allow you to untap any creature or land more than once during a single untap step.
- 15 September 2013Creatures and lands you control untap at the same time as the active player's permanents. You can't choose to not untap them at that time.
- 15 September 2013The last ability applies to creature cards in any zone, provided something is allowing you to cast them. For example, if you control a Zombie, you could cast Gravecrawler (a creature with “You may cast Gravecrawler from your graveyard as long as you control a Zombie”) from your graveyard as though it had flash.
- 15 September 2013Effects that state a creature or land you control doesn't untap during your untap step won't apply during another player's untap step.
- 15 September 2013If you're casting a creature spell with bestow, whether or not it has flash will depend on if you're casting it as a creature or as an Aura. Prophet of Kruphix won't give flash to a spell with bestow you're casting as an Aura.