Cheapest priced copy (Khans of Tarkir): $0.99 at Card Kingdom, near mint, their price list as of .
Anafenza, the Foremost 
Legendary Creature — Human Soldier · 4/4 · Mythic · Khans of Tarkir · #163
Whenever Anafenza attacks, put a +1/+1 counter on another target tapped creature you control.
If a nontoken creature an opponent owns would die or a creature card not on the battlefield would be put into an opponent's graveyard, exile that card instead.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.99 to $2.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Khans of Tarkir | 163 | Mythic | $0.99 | $2.49 |
| Khans of Tarkir Promos | 163s | Mythic | — | $2.79 |
4 rulings from Wizards of the Coast
- 20 September 2014Anafenza's last ability cares only what the card would be in the zone it's moving from, not what it would be in the graveyard. For example, if a land card you control becomes a creature due to an effect and then dies, the land card will be exiled. But if a creature card with bestow is an Aura when it would be put into the graveyard, it ends up in the graveyard.
- 20 September 2014Anafenza's first ability can target any tapped creature you control. That creature doesn't necessarily have to be attacking.
- 20 September 2014If your opponent discards a creature card while Anafenza is on the battlefield, abilities that function when a card is discarded (such as madness) still work, even though that card never reaches a graveyard. In addition, spells or abilities that check the characteristics of a discarded card (such as Chandra Ablaze's first ability) can find that card in exile.
- 20 September 2014While Anafenza is on the battlefield, abilities that trigger whenever a nontoken creature your opponent owns dies won't trigger, as that card will never reach that player's graveyard. (Token creatures will still go to the graveyard briefly before ceasing to exist.)