It does not exist in FE8U.
Although it remains in FE8J, it disappears in FE8U.
Besides that, animations that are not used, such as Ekkesax's shock wave effect, remain in FE8J, but have disappeared in FE8U.
Since FE8U was released after FE8J, it seems that it deleted the animation which FE8 did not use.
Please use other magic animation using magic expansion patch.