Eldritch Body
3rd level-Level Artificer, Tattooist Feature
You have begun to mark yourself with arcane power,
and have given yourself the first empowered design of
many more to come. You learn one Eldritch Invocation
from the warlock class, using your artificer level in place of
warlock level. Whenever you gain a level in this class, you
can replace one invocation with another for which you
meet the prerequisites. If you have an invocation that
would reference a warlock spell slot, you can instead use
any spell slot of a level 1/4 your artificer level, rounded up.
Once each at 9th and 15th level, you learn an additional
Eldritch Invocation in the same manner.