Let’s Do Math With Professor Garzett! [RD/KP17]

These equations will wear you down to the bone!

RD/KP17-JP040 タスドクロ Tasudokuro (Plus Skull)
Level 4 DARK Fiend Effect Monster
ATK 1300
DEF 0
[REQUIREMENT] Change the Attack Position card to face-up Defense Position
[EFFECT] Choose 1 face-up DARK Fiend monster on your field with an original ATK and DEF of 0. During this turn, that monster gains 1000 ATK and its attacks pierce.

RD/KP17-JP041 マスドクロ Masudokuro (Multiply Skull)
Level 4 DARK Fiend Effect Monster
ATK 1300
DEF 0
[REQUIREMENT] None
[CONTINUOUS EFFECT] If you would Tribute Summon a DARK Fiend Effect Monster with 0 ATK and 0 DEF in Attack Position, you can treat this face-up card as 2 Tributes.