If held by a Tyranitar, the Tyranitarite allows it to Mega Evolve into Mega Tyranitar if its Trainer has a Key Stone. A Trainer can only Mega Evolve one Pokémon per battle (or only have one Mega-Evolved Pokémon at any given momentZA).
As a Mega Stone, it is unaffected by item-negating effects (such as Embargo and Klutz). Item-manipulating effects (such as Trick and Fling) cannot give or remove a Tyranitarite from Tyranitar.
Outside of battle
If held by a Tyranitar, the Tyranitarite allows it to Mega Evolve into Mega Tyranitar when it performs a Spectacular Talent during a Pokémon Contest Spectacular if its Trainer has a Key Stone. Tyranitar will remain a Mega Tyranitar until the Talent Round ends.
Erases Pokémon and disruptions around three spots you tap. Erases five tiles in a + shape surrounding each spot. Does not activate if the foe is defeated. Only gives 3 seconds to tap. Can erase fewer than 3. The disruption countdown formerly did not decrease if this effect was triggered by the first match of the combo, but this was corrected in Version 1.3.28 (3DS)/1.9.1 (Mobile).
Mega Ring System Tyranitarite
Tyranitar, Mega Tyranitar & Tyranitarite metal charm set
