Chronomaly Sol Monolith

Level 6 EARTH/Rock Effect
600 ATK / 600 DEF

Once per turn: You can target 1 "Chronomaly" monster you control; its Level becomes 6. You cannot Special Summon any monsters during the turn you activate this effect, except "Chronomaly" monsters.

Rulings – Yugipedia

Printings:

Number Hunters: NUMH-EN004 (Super Rare) - 2013-07-12

Prices:

Cardmarket: 0.22 €
TCGplayer: $ 0.16