[1.2.397] Demon Slayer (3)

So i notice in 4th tier there is now decrease cooldown (by how much? 2 minutes? B> -4 min cooldown for almost spammable heroes will), increase max/min crit damage, 35% boss damage, 40% PDR ignore, damage reflect, +#incTerR% (whatever that means, status resistance?), as well as the normal +12% stat etc etc.

But when do items get these bonuses?