How about items that give armor and self-healing?
Currently we have items which give lifesteal and all-heal + a few offensive stats. But there're only 2 items which give healing and defense, they're Maw of Malmortius which gives lifesteal+spellvamp+magic resist, and Spirit Visage which gives increase healing of all kind and health+magic resist. But there's no item which gives armor and healing. (I didn't count DD as a defense item because the dmg you blocked before gets dealt anyway, while armor/magic resist nullifies it completely)
What do you think about this? Was it probably not made until now because riot thinks armor+ heal is op?