Reverse Jar

Flip Effect Monster · Rock · EARTH · ★3

ATK 800/DEF 900

“FLIP: Change as many other monsters on the field as possible to face-down Defense Position, then, return as many face-up Spells/Traps as possible from the field to the hand, then, each player can Set Spells/Traps from their hand, up to the number returned to their own hand by this effect. You can only use this effect of "Reverse Jar" once per turn.”