The original pack was made for Minecraft 1.8.9 (PvP clients like Lunar, Badlion). It may work on newer versions, but textures like short swords might break.
The most common type of Wemmbu packs are those designed for competitive PvP and Bedwars. PvP texture packs generally feature , which can help players distinguish blocks and entities faster. wemmbu texture pack
Where clear visibility of incoming players and fireballs is critical. The original pack was made for Minecraft 1