RD/KP13-JP033 プルグラース・スピアース Pureglass Spears/Puregrace Spears
Level 8 LIGHT Sea Serpent Effect Monster
ATK 2500
DEF 2500
[REQUIREMENT] You can activate this by changing this card’s Battle Position (Attack Position to face-up Defense Position; face-up Defense Position to Attack Position)
[EFFECT] Choose 1 face-up monster you control. During that turn, that monster gains 1000 ATK and its Attacks pierce.

Source