The Threads of Magic

When you cast a spell of 1st level or higher create
a ward with hp equal to Sorcerer level + charisma
modifier and choose a non physical damage type.
When you would take damage the ward
takes the damage instead. If the ward is reduced
to 0 hp you take the remaining damage. The ward
remains but is broken. If you take damage of the
chosen type while the ward is broken, the ward
replenishes hp equal to the original damage
dealt. Whenever you cast a spell of 1st level or
higher you can change the da