Torrent Elemental
Creature — Elemental
Flying
Whenever this creature attacks, tap all creatures defending player controls.
: Put this card from exile onto the battlefield tapped. Activate only as a sorcery.
James Paick
Fate Reforged Promos (PFRF)
• #56sRulings
"Defending player" refers to the player Torrent Elemental is attacking or the controller of the planeswalker Torrent Elemental is attacking. In multiplayer formats that allow attacking multiple players, creatures controlled by other players won't be tapped, even if you control other creatures attacking those players or planeswalkers those players control.
(wotc • 2014-11-24)
Rulings
"Defending player" refers to the player Torrent Elemental is attacking or the controller of the planeswalker Torrent Elemental is attacking. In multiplayer formats that allow attacking multiple players, creatures controlled by other players won't be tapped, even if you control other creatures attacking those players or planeswalkers those players control.
(wotc • 2014-11-24)