Hi, I created this system to make sword slashes creation very easy.
While I was spending a year building this system, two similar tools from other developers appeared. But mine is better and more polished 
Soon will be available here: https://assetstore.unity.com/packages/slug/390582?aid=1100lpot2
Epic Sword Slash Effects System is a procedural solution for creating smooth sword, weapon, and slash trails in Unity. It supports multiple material layers, reusable presets, custom UVs, low-FPS curve smoothing, alpha fading, particle effects, and shader-based dissolve. Multiple weapons can be controlled by one Animation Event component, with optional continuous operation without an Animator. Dissolve starts from the value assigned in the material and uses MaterialPropertyBlock, allowing multiple trails to safely share one material.
The pack includes 23 presets weapon-following sword slash effects designed for RPGs, action games, fantasy battles, arena combat and stylized character abilities. These effects are made to follow sword movement and help make attacks feel more powerful, responsive and polished. These trails can be added to anything, not just characters with an animator!
Features:
- Weapon-following slash effects
- Great for melee combat and fantasy abilities
- Suitable for RPGs, action games, hack-and-slash games and arena battles
- High-quality real-time visual effects
- Easy to use and customize
- Works well for player attacks, enemy attacks, skills and special moves
- Supports standard and custom materials
This asset is designed for developers who want to quickly add polished sword combat effects to their Unity projects.