New player looking for help making starting rotes

Hello forever dnd DM turned first time player. Got into a VtM campaign and was given the choice to make a mage. Came up with a great concept n need some help making some defensive, support, and offensive rotes. Sorry in advance for the blurb.

Build is mage with 7 phylactery flaws and manifest avatar merit with the ally and familiar maxed out, 2 prime 2 entropy and 2 forces. I also have 5 destiny, my imaginary friend familiar allows me to cast in a range of 60 feet of him and the effects can occur through me or him. My familiar is a changeling chimera with some flavor.

My concept is a Chorus mage with bad luck magic. Essentially my mage has a great destiny and is allegedly chosen One, supposed to help bring people close to the One through his magic of fate and his imaginary friend bringing peace and joy. On his 18th birthday he was on the way to the chorus for the proving ceremony (removing the sword excelsior from the stone) Sheldon only removed the hilt, leaving the blade in the stone. The Chorus deliberated for 3 months finally acquiescing he still has to Be the closest thing to a chosen one they have but by then Sheldon’s confidence was shot and bc he was afraid of trying at something that big and wanted to “grow up” and 30 years later essentially never made anything of himself. Completely mediocre in every aspect of himself never worked out didn’t curate a particular skill had no hobbies. This goes on until his wife leaves him for another man, kids hate him, he loses everything and has a mid life crisis. And instead of working on his marriage or his relationship with his kids, he goes back to reclaim his lost destiny with his imaginary friend. It’s now implied the One is mad at my character and interferes personally at every instance of his magic.

Rotes I currently have: Bend luck: make successes easier for allies Exacerbate: make all 1s in an area count double Rube Goldberg blast: attack of convenience I need a few more attack defensive or support rotes. I am trying to play an unconventional support who can still deal damage. Please help the coterie elected Sheldon leader and he can’t handle the pressure