Mathmech Circular 
Level 4 LIGHT/Cyberse Effect1500 ATK / 1500 DEF
You can send 1 "Mathmech" monster, except "Mathmech Circular", from your Deck to your GY; Special Summon this card from your hand, also you can only attack with 1 monster for the rest of this turn. If a "Mathmech" monster is Normal or Special Summoned to your field while you control this monster (except during the Damage Step): You can add 1 "Mathmech" Spell/Trap from your Deck to your hand. You can only use each effect of "Mathmech Circular" once per turn.
Printings:
Power of the Elements: POTE-EN028 (Super Rare) - 2022-08-04Prices:
Cardmarket: 0.56 €TCGplayer: $ 0.27