A projectile’s flight begins at the shooting unit’s location and travels within the same region in a cardinal direction. Its flight continues until it either reaches the edge of its region or it reaches the first unit (enemy or ally) along its path, ignoring any allies at the projectile’s starting location.
Different projectiles will have different effects, but often deal damage to the impacted unit.
If there are multiple valid units that could be hit, the projectile's controller chooses which unit the projectile hits.
Projectiles enter their starting location. Then, they have a path that includes their starting location and any additional locations.
Projectiles cannot hit minions with Stealth, but some projectiles don't care about "hitting" and instead just care about their path (e.g. ).