Cheapest priced copy (Theros Promos): $0.49 at Card Kingdom, foil, near mint, their price list as of .
Anthousa, Setessan Hero 
Legendary Creature — Human Warrior · 4/5 · Rare · Theros · #149
Heroic — Whenever you cast a spell that targets Anthousa, up to three target lands you control each become 2/2 Warrior creatures until end of turn. They're still lands.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Theros Promos | 149★ | Rare | — | $0.49 |
| Theros | 149 | Rare | $0.49 | $0.49 |
4 rulings from Wizards of the Coast
- 15 September 2013Heroic abilities will trigger only once per spell, even if that spell targets the creature with the heroic ability multiple times.
- 15 September 2013Heroic abilities won't trigger when a copy of a spell is created on the stack or when a spell's targets are changed to include a creature with a heroic ability.
- 15 September 2013Heroic abilities will resolve before the spell that caused them to trigger.
- 15 September 2013If a land that hasn't been under your control continuously since your last turn began becomes a creature, it can't attack and its activated abilities that include {T} can't be activated. Notably, it can't be tapped for mana that turn.