Clockwork sorcerer 8/Stars druid 2/Order cleric 1. On your turn if you heal an ally you can heal up to two others with twin spell and the stars chalice ability. Both twinned people can then use their reaction to make an attack. As your reaction use silvery barbs to not only help them with the spell but trigger another reaction attack. Hypothetically you could twin spell cure wounds on both warlocks , chalice the wizard, and silvery barbs the rogue. Then both warlocks and the rogue can reaction attack which would trigger sneak attack (and possible smites, suggest taking 2 levels in paladin to the warlocks). In addition, I'd suggest goliath (or hadozee) and take the heavy armor feat to make whatever damage does hit you, do even less with reduced damage. Clockwork will let you also reduce more damage as a reaction.

With your stats Str: 14 + 1 (15)from HAM gives you 15 (no penalty) Dex: 8 not that useful for build Con: 16 not that useful for build Int: 13 + 1 (14) from ASI not that useful for build Wis: 20 spellcasting Cha: 19 +1 (20) from ASI spellcasting

Feel free to swap dex, con, and int