Unlike when building a deck around a particular strategy, your gameplan in a typal deck might just be to curve out, with less thought put into how you get to a win
All this while you beat them in the air with vigilance, no less
And with just one mana to cast and one to equip, its incredibly efficient
If you attack with multiple creatures equipped with Hexplate Wallbreakers in one combat phase (or one creature equipped with multiple Hexplate Wallbreakers), you'll have that many additional combat phases, but your attacking creatures are untapped only during the current combat phase
In very much the same way that a bit of life doesn't make Lightning Helix better than simple old Bolt the life on this comes nowhere near making it better than Hymn to Tourach
Before you decide where to settle in, run through a short readiness list that frames your priorities and reduces surprises once you start playing with real funds