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Friendly reminder that Smack Down/Stone Edge Tyranitar is weaker than Smack Down/Meteor Beam Gigalith, Rock Throw/Meteor Beam Tyrantrum, Smack Down/Rock Wrecker Rhyperior and Smack Down/Rock Slide Rampardos in raids. Even if you have the shadow variant, the latter two will do the job just as well for way less stardust. Mega Aerodactyl is also more pragmatic for beating raid Pokémon that are flying-type like Ho-Oh and Moltres, and even if Mega Tyranitar is technically overall stronger than it, that won't be the case for Mega Diancie.