Cheapest priced copy (Ravnica Allegiance): $1.49 at Card Kingdom, near mint, their price list as of .
Mass Manipulation 
Sorcery · Rare · Ravnica Allegiance Promos · #42p
Gain control of X target creatures and/or planeswalkers.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $1.49 to $12.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Ravnica Allegiance Promos | 42p | Rare | $7.49 | $12.99 |
| Ravnica Allegiance | 42 | Rare | $1.49 | $3.99 |
2 rulings from Wizards of the Coast
- 25 January 2019In a multiplayer game, if a player leaves the game, all cards that player owns leave as well, and any effects that give the player control of permanents immediately end.
- 25 January 2019The control-change effect of Mass Manipulation lasts indefinitely. It doesn’t wear off during the cleanup step.