Its a fairly easy event. I just pulled him as well. maybe Masked Saiyan, TEQ Gogeta, INT Gogeta, PHY Super Vegito, STR Vegito, STR Vegeta, and I know it doesn't help Bardock but I'd use a LR Vegito Friend cause he'll basically almost 1 shot him
my choice is almost the same as above I'm really just relying on the LR Vegito friend to murder him and he will. And hey before you awaken that UR farm the SR TEQ Goku Black so you can raise his SA. It kind of sucks and is a chore but it'll be worth it.