rename getInstance to create
completed AEther Mutation
replace MagicWhenPutIntoGraveyardTrigger with MagicWhenDiesTrigger
replace MagicWhenPutIntoGraveyardTrigger with MagicWhenDiesTrigger
replace MagicWhenPutIntoGraveyardTrigger with MagicWhenDiesTrigger
simplify script for Kodama of the Center Tree