Cheapest priced copy (Fate Reforged): $0.35 at Card Kingdom, near mint, their price list as of .
Lotus-Eye Mystics 
Creature — Human Monk · 3/2 · Uncommon · Fate Reforged · #17
Prowess (Whenever you cast a noncreature spell, this creature gets +1/+1 until end of turn.)
When this creature enters, return target enchantment card from your graveyard to your hand.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
3 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fate Reforged | 17 | Uncommon | $0.35 | $0.49 |
| The List | UMA-23 | Common | $0.35 | — |
| Ultimate Masters | 23 | Common | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 24 November 2014Once it triggers, prowess isn’t connected to the spell that caused it to trigger. If that spell is countered, prowess will still resolve.
- 24 November 2014Prowess triggers only once for any spell, even if that spell has multiple types.
- 24 November 2014Any spell you cast that doesn’t have the type creature will cause prowess to trigger. If a spell has multiple types, and one of those types is creature (such as an artifact creature), casting it won’t cause prowess to trigger. Playing a land also won’t cause prowess to trigger.
- 24 November 2014Prowess goes on the stack on top of the spell that caused it to trigger. It will resolve before that spell.