Hex

A minecraft mod about casting spells, inspired by PSI.

To Cast A Spell

Get a Wand, which stores mana.
Right-click with it to start casting a Hex.
Look around to draw a pattern, a sequence of lines on the invisible hexagonal grid that permeates reality.
When you are done with your pattern, release right-click. Hopefully, that pattern corresponds to an action. (If not, you blow up.)
Actions manipulate a stack of data. The stack starts empty when you first start casting a hex. Some actions just push data, while some pop off some arguments and push some arguments in return.
Certain actions, will push a spell to the stack. When the stack is empty except for one spell, the hex is successfully cast with the given effect.