I’m not sure if it’s Gish enough but I’m playing a goblin moonchild sorcerer with booming blade and armor of agathys.

Use the damage reduction from the runes to keep the armor of agathys up and doing its killing work. So it’s a thorns build.

We did serious goblin on goblin action with the goblin revolushun and it worked brilliantly. Sorcerer dives into melee casting armor of agathys while shouting about if they strike him the glorious Revolution will only get stronger. Cue many dead goblins while he used his runes to mitigate the damage. Lots of dead goblins.

Very mediocre mage armor AC, booming blade and disengage rather than multiple attacks. But as a melee skirmisher it’s held up surprisingly well so far.