Editing Phoenix Sigil

Corin makes several of these for himself and his friends, improving on their design as he progresses. Originally they just created a second shield outside that created by the School-issued [[Shield Sigil]]<ref name="aa1-16">''Sufficiently Advanced Magic'' Chapter 16</ref>, but he later added several additional functions to them.

== Design ==

Corin's phoenix sigils have been through several iterations, growing in power and complexity as his skills as an enchanter improved.

=== Initial Design ===

Corin's initial phoenix sigils, designed for his friends to use in the second fake spire exam. This initial iteration was made of copper and were a more powerful version of the school-issued shield sigils with a self-recharging function<ref name="aa1-16" />.

=== Silver Phoenix Sigils ===

Prior to the final first-year exam, Corin made a new version using pure silver due to the increased enchanting capacity. This extra capacity was used to double the shield's power, and to add a regeneration effect<ref name="aa2-15">''On the Shoulders of Titans'' Chapter 15</ref>.

=== Anti-Tampering ===

After his final exam, Corin added anti-tampering runes to his phoenix sigil, so only he could make modifications to it<ref name="aa2-19">''On the Shoulders of Titans'' Chapter 19</ref>.

=== Mana regeneration ===

Prior to climbing the spire in search of his brother, Corin adds a mana regeneration function into the phoenix sigils<ref name="aa2-22">''On the Shoulders of Titans'' Chapter 22</ref>.

=== Jump Bell ===

On the train ride to Caelford, Sera helps Corin upgrade the shield sigils with low-quality jump bell enchantments, which required anchors and had a very short range<ref name="aa3-2">''The Torch that Ignites the Stars'' Chapter 2</ref>.

== References ==