Allow Effect Mechanics to orient/face towards their target from the origin

As of right now, using effect mechanics such as particlering and particle, there is no way to reliably orient a particle effect to face towards the effect's targeter without doing excessive amounts of math - a parameter such as orient=true which makes the effect face the targeter from the origin would be amazing.

Could use this for projectile contrails, impact FX, portals, magic circles, ect cetera. If this could also be applied to Slash, that'd be great too.