Where the Spike Array punishes intruders with pain, these arrays offer more sophisticated defenses.
The Repulsion Array creates an invisible ward that pushes hostile creatures away in a 5-block radius. Anything that means you harm will find itself unable to approach.
The Deflection Array projects a column of protective force above it, reflecting any projectile that passes through back the way it came.
The Deflection Array requires an Tabula Animata and a diamond to inscribe, reflecting its advanced nature. It protects a column roughly 6 blocks tall and 3 blocks wide.
The Repulsion Array needs only iron and lapis, making it accessible even to apprentice vitaemancers.
The best defense is one your enemy never sees.