Jace, Ingenious Mind-Mage

Legendary Planeswalker — Jace

: Draw a card.
: Untap all creatures you control.
: Gain control of up to three target creatures.

2017-09-29:
The control-change effect of Jace’s last ability lasts indefinitely. It doesn’t wear off during the cleanup step or when you lose control of Jace.
2017-09-29:
In 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.