All the items past the 6th are situational or preferential depending on your team comp or the enemy comp. Sovereignty/Heartward/Spirit Robe can very easily be interchanged for any situational item, as Thebes and Sentinel's Embrace gives a fair amount of protections to allies. You can also go for a Hero's Axe for the defensive shield option or Compassion to lessen the damage your allies take as a whole. Pestilence/Contagion (depending which protection you need) for healers, Witchblade/Midgardian for hunters, Shoguns/Talisman of Energy for your hunters or auto-attackers, Winged Blade for too many slows, Stone of Gaia for a team with alot of knockups, or even early aggression with Stone of Binding. If you do need a damage item, I can recommend going for Spear of the Magus, as it does increase the damage of all sources to allow your team to do more damage to whomever you CC. I'd say try to consider if you need more health as well, or if you need any more MP5/HP5 or protections for survivability if you go for more situational items.