Google Gemini Answer
Ghost:Ghost-typePokémonareimmunetoFighting-andNormal-typemoves,andtakehalfdamagefromPsychic-typemoves.Thiscanbeamajoradvantageinbattle,asmanypopularPokémonusethesetypesofmoves.
Hypnosis:Hypnosisisapowerfulsleep-inducingmovethatcangiveGastlyafreeturntoattackorsetup.ItisalsoagoodmovetouseagainstPokémonthatareimmunetoGhost-typemoves,asitcanstillputthemtosleep.
Lick:LickisagoodSTABmoveforGastly,andithasachancetoparalyzetheopponent.Thiscanbeveryhelpfulinbattle,asitcanslowdowntheopponentandmakeitmoredifficultforthemtoattack.
ShadowBall:ShadowBallisapowerfulGhost-typemovethatisGastly'ssignaturemove.ItisagoodSTABmove,andithasachancetolowertheopponent'sSpecialDefense.
GastlycanbeaveryeffectivePokémoninbattleifitisusedcorrectly.BytakingadvantageofitsGhost-typingandmoveset,Gastlycantakedowneventhetoughestopponents.
