Brionac, Dragon of the Ice Barrier

[ Sea Serpent / Synchro / Effect ] 1 Tuner + 1+ non-Tuner monsters You can discard any number of cards to the GY, then target the same number of cards your opponent controls; return those cards to the hand. You can only use this effect of "Brionac, Dragon of the Ice Barrier" once per turn. ATK/ 2300 DEF/ 1400