You can use Unity's particle system as the basis for your targeting/seeking mechanics using just the built-in Force Field component, with ZERO programming to start with. ✨🎯 : r/Unity3D
ArtStation - Unity Portal particle effect.
Unity - The Particle System | Tutorialspoint
Unity VFX Graph Tutorial Fire Ring - YouTube
Modifying Gravity, Color, Size & Lifetime of Particle Systems - Unity Learn
Unity Particle System Tutorial: Circle Motion - OctoMan Games