[Autumn]

I'd rather give them something original rather than basing.

The idea behind Child of the Hanging Star is too good to pass.

Blue Iahsus: Nothing.
Purple Iahsus: +50% Status Resistance
Red Iahsus: +15 SWA, +15% Critical Damage
Orange Iahsus: +15 Hit/Critical
Yellow Iahsus: +15 Evade/Critical Evade

Let's not forget that Corrupted are very vulnerable naturally, due to how they'll always have close to zero Status Resistance.

I unironically like this idea, even if it might make shaitans stronger, its very situational when it occurs, and gives some much needed love to the other corrupted.