Glub glub glub…

RD/KP09-JP056 吉兆の面 Kicchou no Men (Meticulous Mask of Good Omens)
Normal Trap Card
[REQUIREMENT] You can activate when your opponent’s monster declares an attack.
[EFFECT] Choose 1 face-up monster (Warrior-Type) you control, it gains 100 ATK x [The chosen monster’s Level] until the end of the turn.

Note: I think this is a pun on 几帳面 which means to do things methodically and meticulously.

Source