Cheapest priced copy (Final Fantasy): $0.35 at Card Kingdom, near mint, their price list as of .
Ambrosia Whiteheart 
Legendary Creature — Bird · 2/2 · Uncommon · Final Fantasy · #6
Flash
When Ambrosia Whiteheart enters, you may return another permanent you control to its owner's hand.
Landfall — Whenever a land you control enters, Ambrosia Whiteheart gets +1/+0 until end of turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $0.35 to $10.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Final Fantasy | 6 | Uncommon | $0.35 | $0.49 |
| Final Fantasy | 325 | Uncommon | $0.79 | $0.49 |
| Final Fantasy | 424 | Uncommon | $0.49 | $10.99 |
3 rulings from Wizards of the Coast
- 25 July 2025A landfall ability doesn't trigger if a permanent already on the battlefield becomes a land.
- 25 July 2025A landfall ability triggers whenever a land you control enters for any reason. It triggers whenever you play a land, as well as whenever a spell or ability puts a land onto the battlefield under your control.
- 25 July 2025Whenever a land you control enters, each landfall ability of permanents you control will trigger. You can put them on the stack in any order. The last ability you put on the stack will be the first one to resolve. As a result, you can have those abilities resolve in the order of your choosing.