build recommendation for my brother (new player + mageblood)

he is relatively new (800 hrs) and just dropped the mageblood from ground loot. i told him to go righteous fire chieftain but his friend told him that build isn't the best use for the build. is there other builds I can recommend that go pretty nice with the belt?

in the past 3-4 leagues he's played the following builds, lightning strike warden (didnt get past red maps) hroc necro (his current build and a build he played before), lightning arrow deadeye (didn't get past red maps), and eviscerate gladiator.

he goes to delve for fossils to make currency and doesn't have a ton of currency on hand but doesn't want to sell the belt.

Not selling is def the right decision. I played Earthshatter last time i had a Mageblood. I used all the res flasks, so i had plenty of room for other suffixes and was still extremly tanky(i guess thats the go to with a MB).

EArthshatter got nerfed but Carn still started it in hc sff so it must still be pretty good and it is also reasonably easy to set up as a build.

Heavy Strike Reliquarian