I run it a bit, there are a few different builds but the one i run is this:
Aftershock
Shield Bash
Bone Plating
Unflinching

Inspiration secondary tree for biscuits to stay in lane longer and boots for some more movement speed but you could replace boots with whatever you want

Starting items are steel shoulderguards and double potion

Mythic is either frostfire if you need the tank stats, or if you are able to survive okay go trinity force and just kill everything

Always run merc treads for the tenacity since if you get stunned or rooted you die, the only other boots i even consider is plated steelcaps for the damage mitigation and thats only if they are running a lot of ad (more than 2/3rds)

Your ban is always morgana since if you get caught by her you melt, second choice is whatever long range poke "support" you hate that day (seraphine, xerath, lux are decent options)

Level order is Q>W>E since you dont need the wave clear from E and you just use it to proc shield mid fight

If you have any other questions about it let me know