Shias are Muslims, understand that. Like you can't pray to saints in our religion also we can't pray to saints. There are nullifies of faith which you might not know. Shais curse the companions of prophet and wife of prophet.
As I said earlier Gharaniq is a fake story. Period. Now don't get me started on Greek & Christian similarities or Mithras. If shais are Muslims same way non trinitarians are Christians.