Circle of the Diablo (Revised)

Circle of the Diablo allows you to Wild Shape in creatures of the fiend creature type. Including devils, demons, and creatures like hell hounds, nightmares, cambions, and hags.

Fiendish Wild Shape

When you choose this circle at 2nd level, you can use wild shape to transform into any fiend-type creature that exists, you do not need to have seen it before to do so.

Horrific Forms

Starting at 2nd level, when you want to use your fiendish wild shape, you follow the Beast Shapes table limitations, except that the max CR is half your level rounded down, ignoring the Max. CR limitation on the beast shapes table.

Ardigo’s Resistance

At 3rd level, choose one damage resistance, damage immunity, or condition immunity from any fiend creature’s stat block. You gain that resistance/immunity while not in wild shape, as a passive.

Agonizing strike

Starting at 6th level, when in fiendish wild shape, your attacks do an extra Xd6 amount of fire damage. X = your proficiency bonus.

Wild Shape Ultimatum

Starting at 10th level, you can spend 2 wild shape uses at the same time to transform into a Pit Fiend.

Terror Unleashed

Starting at 14th level, when in fiendish wild shape, creatures that see you in their line of sight are frightened of you.