Apparatus of the spell knight

This collective arm piece has a large pauldron with three encased crystals that connect with sparks, they glow dimly and arcane runes are lined along the arm. The arm gives you a bonus to your AC equal to half your Int modifier (rounded down).

The apparatus has 10 charges, which recharge all spent charges after a long rest, you can expend these charges to activate one of three properties.

• (2 charges), You can use a bonus action to cast the magic missile at the 2nd level.
• (4 charges), You can use your action to cast the dispel magic spell, the spell instead of targeting a single object, every spell or item in a 60ft radius will be affected by the spell.
• (6 charges), When you cast a spell, you can use your reaction to have your spell attack roll or spell DC have a bonus equal to your Int modifier.

Notes: spellcaster