TIP for who is using the ice bro:
As seen on New Super Mario World 2:Around the world the stationary ice bro freezes and stunlock the player to death.
Its basically a inta-death enemie...
But it can be fixed if you change its ice ball spawning rate.
Tested again after rejection with Tattletale. Seems that I was dumb enough to not change the original boomerang.asm into the new one that comes with this pack, causing the glitch I mentioned. Changing it makes the sprite to work fine. Tested them further and they work, so, accepted. My apologies, for all it's worth.