Performage Mirror Conductor

Level 4 LIGHT/Spellcaster Pendulum Effect
600 ATK / 1400 DEF

[ Pendulum Effect ]
Once per turn: You can target 1 face-up Special Summoned monster on the field; its ATK and DEF become equal to its current ATK or DEF (whichever is lower) until the end of this turn (even if this card leaves the field).

[ Monster Effect ]

Once per turn, during either player's turn: You can target 1 face-up monster on the field; switch its current ATK and DEF, then take 500 damage. This ATK and DEF change lasts until the end of this turn.

Rulings – Yugipedia

Printings:

Dimension of Chaos: DOCS-EN015 (Common) - 2015-11-05
2016 Mega-Tin Mega Pack: MP16-EN118 (Common) - 2016-09-01

Prices:

Cardmarket: 0.07 €
TCGplayer: $ 0.15