Gruul Charm
Instant
Choose one —
• Creatures without flying can't block this turn.
• Gain control of all permanents you own.
• Gruul Charm deals 3 damage to each creature with flying.
"Not Gruul? Then die!" —Borborygmos
Zoltan Boros
Gatecrash (GTC)
• #169Rulings
If you choose the first mode, no creature without flying will be able to block that turn, including creatures that lose flying and creatures without flying that enter after Gruul Charm resolves.
(wotc • 2013-01-24)
A token is owned by the player under whose control it entered.
(wotc • 2013-01-24)
If you choose the second mode, Gruul Charm's effect will override any other control-changing effects on those permanents.
(wotc • 2013-01-24)
Rulings
If you choose the first mode, no creature without flying will be able to block that turn, including creatures that lose flying and creatures without flying that enter after Gruul Charm resolves.
(wotc • 2013-01-24)
A token is owned by the player under whose control it entered.
(wotc • 2013-01-24)
If you choose the second mode, Gruul Charm's effect will override any other control-changing effects on those permanents.
(wotc • 2013-01-24)