I was needing this gfx then I searched the entire SMBX CGFX Pack and theres nothing like this so I made one..
heres an animation

to download click the animation!
NOTE!
How to trigger the frozen flower
1.make a layer then put a (power up) flower anywhere
2.make an event then add the layer to show layer
3.hide the layer then put the frozen flower and add the event tab DEATH-then Event(ex.Flower)
4.start throwing the fireball to the frozen flower!