MadMagics

Blazing Javelins, The most likely first magical object you will come to make in your time with this mod, they can be thrown, are one time use when hitting a mob, and light the creature on fire also dealing a fair bit of damage

Empty Crystals can be crafted with any type of stained glass and a lapis block in the center, they turn into their elemental counterparts under the right conditions; skyrite needing a thunderstorm, and Magmite needing to be placed on magma blocks, these two elements break into smaller pieces which can be used to craft their spell books

The Book of Lightning Wall can be crafted with a book, two skyrite, and one blue wool, it has a 30 second cooldown and can cause massive damage to entities and the world. 

 
The Book of Magma Pillar is crafted with 2 magmite, one magma block, and one paper; It has even more potential destruction than the last book, and also has a 30 second cooldown, while dealing less direct damage.