Ruby Dragon Slayer Magic

Ruby Dragon Slayer (ルビーの滅竜魔法 Rubī no Metsuryū Mahō) is a Caster Type magic, Lost Magic and a type of Dragon Slayer magic used by Magnus Octavian.

Abilities
This magic allows Magnus to incorporate the element of ruby into his body, granting him the ability to change parts of his body or his entire body into ruby, which can be shaped in a number of forms for different purposes, and to produce ruby objects.

The magic relies around the use of ruby for both offense and defense, with Magnus being capable of creating a wide array of weapons from his body to attack the opponents in close range, mid range, and long range, and to cover his body with ruby in order to greatly increase his defensive power, at the same time greatly strengthening his offense as well.

Limits
A limitation is that Magnus is in a permanent Dragon Force state and he cannot get any stronger than he already is.

Basic Spells
Ruby Dragon's Scales (ルビー龍の鱗 Rubīryū no Uroko):

Ruby Dragon's Roar (ルビー龍の鱗 Rubīryū no Hōkō):

Ruby Dragon's Blade 

Ruby Dragon's Scythe (ルビー龍の大鎌 Rubīryū no Ōgama):

Ruby Dragon's Spear

Advanced Spells
Crimson Abyss: Rain of Rubies