Cheapest priced copy (Ravnica: Clue Edition): $0.99 at Card Kingdom, near mint, their price list as of .
Trostani Discordant 
Legendary Creature — Dryad · 1/4 · Mythic · Guilds of Ravnica · #208
Other creatures you control get +1/+1.
When Trostani enters, create two 1/1 white Soldier creature tokens with lifelink.
At the beginning of your end step, each player gains control of all creatures they own.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $0.99 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica: Clue Edition | 213 | Mythic | $0.99 | — |
| Guilds of Ravnica | 208 | Mythic | $0.99 | $1.49 |
| Guilds of Ravnica Promos | 208s | Mythic | — | $1.49 |
| Starter Commander Decks | 253 | Mythic | $0.99 | — |
3 rulings from Wizards of the Coast
- 5 October 2018If a creature has an ability that triggers at the beginning of each end step and Trostani's ability causes you to gain control of it, the ability of that creature is still controlled by the creature's former controller. If the creature has an ability that triggers at the beginning of your end step, that ability doesn't trigger when you gain control of it.
- 5 October 2018The owner of a token is the player who created it.
- 5 October 2018Because damage remains marked on a creature until it's removed as the turn ends, nonlethal damage dealt to other creatures you control may become lethal if Trostani leaves the battlefield during that turn.