didnt test but these are the effects you want, someone else will have to do the combat though, dont think it can be done w/o some combat scripts or on a heartbeat
effect evfx = EffectVisualEffect(VFX_DUR_ETHEREAL_VISAGE);
effect evfx2 = EffectVisualEffect(VFX_DUR_CESSATE_POSITIVE);
effect edr = EffectDamageReduction(20, DAMAGE_POWER_PLUS_THREE);
effect esabs = EffectSpellLevelAbsorption(2);
effect econc = EffectConcealment(25);
effect elnk = EffectLinkEffects(econc, evfx);
elnk = EffectLinkEffects(elnk, evfx2);
elnk = EffectLinkEffects(elnk, esabs);
elnk = EffectLinkEffects(elnk, edr);
ApplyEffectToObject(DURATION_TYPE_PERMANENT, eLink, OBJECT_SELF);