>>534801440
If it's good enough for the R13 Nami, then it should be good enough for majority of the player base.
https://www.onetricks.gg/players/oGZORScP-NnmsTLarx-S3Ab_ZlKsAlGZLFuq7Hxinehu6W7qenIJbQi6IVaQJhKTZryCQHvjIzs2ug
You can go Helia -> Moonstone because Nami does theoretically proc Helia easy with W bounces, but from my own experience playing other Enchanters, Helia feels so dog to play with right now and it's a waste of gold since it doesn't scale.
Taken from this Nami one trick that builds Helia first too: https://www.onetricks.gg/players/9ErWhePhd7IzQZySdB89GdPo4wE4Hrdqg8jjg0zeqUn7gT7qjfATzLK4Ta8E4Y70UWjQFXXPUAv2ug#Nami