one piece 10 booster box OP10 Royal Blood the Surgeon of Death One Piece TCG: Royal Blood

What is the new rule,

EX1-038 C Digimon Lv.4 Stingmon Color Green Cost 6 DP 5000 Digivolve Cost 1 GreenBlue 2 from Lv.3 Form Champion Attribute Free Type Insectoid Card Text 1 [Effect] Piercing (When this Digimon attacks and deletes an opponent's Digimon and survives the battle, it performs any security checks it normally would.) Card Text 2 [Inherited Effect] [Your Turn] While this Digimon has [Imperialdramon] in its name or [Free] in its traits, it gains Piercing

Neil Kaplan (English) A bipedal horse-like Digimon who carries the Horn of Desolation on his back

28, 2024 I digivolve using this cards [When Attacking] effect