Never saw BP using wynn as main tbh, remember that if u go full casting speed, u still have the same cooldown time, so you just cast your skills and wait for CD, so you're not really getting any benefits from it, you may find this rune useful in quick PVP, but in PVE its just too much switching between weapons. And forget about aeore (its a good option for pony tho), its better to invest in shiny weapon.