I would just like to share my wonderful experience working with duke Bune. He is so kind and wonderful, and I'd like to recommend all begginers to start with him
He has showed me ways to riches and inspired me, also protected me from evil in my life.
I invoked him with his sigil asking him to be a welcomed guest. I presented white gold and a diamond in front of him.
I think any gold would be good. He loves expensive things
Also bring some incense and a candle of your choice.