If this card is Summoned: You can Special Summon 1 “Apex Beast” from your Extra Deck, then equip this card to it. While equipped to an “Apex Beast” monster: ● The equipped monster gains 500 ATK. ● Once per turn: negate the effect of 1 face-up monster your opponent controls. You can only use this effect of “Apex Tamer – Sena” once per turn.