Cubic Causality

Normal Trap Card

Distribute a number of Cubic Counters on face-up monsters your opponent controls, up to the number of "Cubic" monsters you control. (Monsters with a Cubic Counter cannot attack, also negate their effects.) You can banish this card from your GY, then target 1 "Cubic" monster you control; this turn, each time it destroys a monster by battle that has a Cubic Counter, inflict damage to your opponent equal to the original ATK of that destroyed monster. You can only use each effect of "Cubic Causality" once per turn.

Rulings – Yugipedia

Printings:

Duel Overload: DUOV-EN051 (Ultra Rare) - 2020-03-19

Prices:

Cardmarket: 0.26 €
TCGplayer: $ 0.18