RoC Spell immunity different from TFT

[Death Adder]

While randomly playing the RoC campaign again i noticed that infernals are spell immune but could still be attacked by spellcasters, they were not magic immune aswell, unlike in TFT.

They couldn't be targeted by spells either, so it's not just a spell res set to 1.00.

I were wondering how to copy that because I don't really like that spell immunity makes them magic immune too in TFT.

 

[WaterKnight]

There was no magic attack in RoC yet. Spell immunity in TFT does render units untargetable to hostile non-ultimate spells.

You could disguise another attack type as magic or trigger your spells to cancel casting on spell immunes.