The Spell Bullet is an item added by Psi. It can store one spell in its memory and be loaded into a Casting Assistant Device (CAD) or a Psimetal tool or armor. Unlike the other types of Spell Bullets the basic one will activate its spell instantly so long as it is within 32 blocks of the player.
Once a spell has been programmed, it can overwrite the current spell it has with a new one when it is right-clicked on a Spell Programmer; if a small beep plays, then the spell has been successfully added to the Spell Bullet. The spell can also be changed if the player shift right-clicks on the Spell Programmer while wielding a CAD that currently has the Bullet selected.
Spell Bullets can be added to a CAD in a CAD Assembler by dragging them to empty sockets in a fully assembled CAD.
Projectile Spell Bullet
Loopcast Spell Bullet
Circle Spell Bullet
Grenade Spell Bullet
Charge Spell Bullet
Mine Spell Bullet