Cheapest priced copy (The List): $2.99 at Card Kingdom, near mint, their price list as of .
Trostani, Selesnya's Voice 
Legendary Creature — Dryad · 2/5 · Mythic · Return to Ravnica · #206
Whenever another creature you control enters, you gain life equal to that creature's toughness.
{1}{G}{W}, {T}: Populate. (Create a token that's a copy of a creature token you control.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
6 printings · $2.99 to $24.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander 2019 | 204 | Mythic | $3.49 | — |
| GRN Guild Kit | 102 | Mythic | — | $4.49 |
| The List | GK1-102 | Mythic | $2.99 | — |
| Return to Ravnica | 206 | Mythic | $4.49 | $24.99 |
| Secret Lair Drop (Miku, Song of the People) | 2429 | Mythic | — | $13.99 |
| Secret Lair Drop (Miku, Song of the People) | 2443 | Mythic | — | $4.49 |
7 rulings from Wizards of the Coast
- 1 October 2012Trostani's first ability checks the creature's toughness as it resolves. If that creature has left the battlefield, use its toughness from when it was last on the battlefield. You can't lose life this way if that creature's toughness was less than 0.
- 12 January 2024Any enters-the-battlefield abilities of the copied token will trigger when the new token enters the battlefield. Any "as [this creature] enters the battlefield" or "[this creature] enters the battlefield with" abilities of the copied token will also work.
- 12 January 2024The new token doesn't copy whether the original token is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any noncopy effects that have changed its power, toughness, color, and so on.
- 12 January 2024The new creature token copies the characteristics of the original token as stated by the effect that created the original token.
- 12 January 2024If you choose to copy a creature token that's a copy of another creature, the new creature token will copy the characteristics of whatever the original token is copying.
- 12 January 2024If you control no creature tokens when you populate, nothing will happen.
- 12 January 2024Populate doesn't target the creature token you're copying. You choose that creature token as you're taking the populate action. You can choose any creature token you control. If a spell or ability causes you to create a creature token and then instructs you to populate, you may choose to copy the token you just created, or you may choose to copy another creature token you control.