2+ Beast, Beast-Warrior, and/or Winged Beast monsters
During your opponent's Main Phase (Quick Effect): You can Special Summon 1 Level 4 or lower Beast, Beast-Warrior, or Winged Beast monster from your hand or GY, but negate its effects, also, return it to the hand during the End Phase. If this card is sent to the GY: You can make all monsters your opponent currently controls lose 300 ATK for each Monster Type you control, until the end of this turn. You can only use each effect of "Tri-Brigade Rugal the Silver Sheller" once per turn.
