Max Metalmorph

Normal Trap

Tribute 1 face-up monster; Special Summon 1 monster that cannot be Normal Summoned/Set and mentions "Max Metalmorph" from your hand, Deck, or GY, then you can equip this card to it with the following effect.
● The equipped monster gains 400 ATK/DEF, it cannot be destroyed by Spell or monster effects, also your opponent cannot target it with monster effects or Spell Cards or effects.
You can only activate 1 "Max Metalmorph" per turn.

Rulings – Yugipedia

Printings:

Rage of the Abyss: ROTA-EN071 (Common) - 2024-10-10
OTS Tournament Pack 28: OP28-EN012 (Super Rare) - 2025-06-18
2025 Mega-Pack Tin: MP25-EN424 (Common) - 2025-09-04

Prices:

Cardmarket: 0.08 €
TCGplayer: $ 0.27