Wither rose sword

The wither rose sword would be a rare item as rare as finding Emerald ore ,it can only be found in loot chest as in dungeons, barried tressure, and black Smith chests exc...or in a really lucky chance wither skeletons can spown with them but have a low chance of dropping it. It deals 1 heart more or same about of damage as a diamond sword, it should also give the withering affect to players and mobs for 30 seconds and it shouldn't be able to put fire aspect on due to it already having the withering affect, there sword should have the same sword texture but black with a visible black rose on the center of the guard and the guard would be a leaf shaped due to the sword being infused with a rose and the sword would give off the a withering affect when equipment and should have a chance of having "curse of binding" When found