[seveianrex]

{zone/attack.cpp}

~ln 1886 locate:

	if(spellbonuses.DamageShieldSpellID != 0 && spellbonuses.DamageShieldSpellID != SPELL_UNKNOWN)
		spellid = spellbonuses.DamageShieldSpellID;
	//invert DS... spells yeild negative values for a true damage shield
	if(DS < 0) {

Add below

		if (IsClient())
		{
			switch (CastToClient()->GetAA(aaCoatofThistles))
			{
			case 1:
				DS *= 1.02;
				break;
			case 2:
				DS *= 1.04;
				break;
			case 3:
				DS *= 1.06;
				break;
			case 4:
				DS *= 1.08;
				break;
			case 5:
				DS *= 1.10;
				break;
			}
		}