War Rock Generations - LIOV-EN091 (C) (Yugioh)
Normal Trap
During the Battle Phase, if your opponent controls more monsters than you do: Special Summon 1 "War Rock" monster from your Deck, and if you activated this card during your opponent's turn, for the rest of this turn while you control the face-up Special Summoned monster, your opponent's monsters cannot attack, except to attack that monster. You can only activate 1 "War Rock Generations" per turn.
Attack: -
Defense: -
Attribute: TRAP