An official post on the Disney Lorcana website says that, after April 8, "all Disney Lorcana events taking place after that date will no longer accept deck lists with those cards included"
While Ruby singers have remained a fringe strategy in competitive events, Powerline has appeared in Set Championships, and that drove a little extra demand for the Enchanted version of the movies most memorable song
The 8 number by the card ID shows its from set 8, but as with all pre-release cards, it wont be legal to play until set 8 fully releases
Imperial Bow is very powerful and should be tried, but Phil and Anna Braving the Storm are great here too
Although this article has focused on packs from The First Chapter and Rise of the Floodborn, I expect that my insights also apply to any future sets, and I hope it has given you a better understanding of what to focus on in Limited tournaments