Try to not use shield with melee druid, they have horrible Block Frames and it can litteraly get you killed, because its so slow. (Unless we are talking about physical immune, in which case Tiamat’s Rebuke is pretty good)
Getting your hand on a big damage 2 hander is much much better, like Bonehew, Immortal King Stone Crusher, Tombreaver or ofc Ribcracker.