Galactic Spiral Dragon

Level 8 DARK/Dragon Effect Monster
2500 ATK / 2500 DEF

While this card is in your hand or GY, if you control 2 or more LIGHT and/or DARK Dragon monsters: You can Special Summon this card in Defense Position, but banish it when it leaves the field. During your Main Phase: You can make all monsters you currently control become Level 8, until the end of this turn. You can only use each effect of "Galactic Spiral Dragon" once per turn.

Rulings – Yugipedia

Printings:

Chaos Impact: CHIM-EN016 (Common) - 2019-10-24
2020 Tin of Lost Memories Mega Pack: MP20-EN160 (Common) - 2020-08-27

Prices:

Cardmarket: 0.13 €
TCGplayer: $ 0.20