Hexplate Wallbreaker

There's no main phase between your combat phases, so you'll have no opportunity to cast spells or activate abilities that could only be activated any time you could cast a sorcery. For example, you won't be able to cast another creature or activate Hexplate Wallbreaker's equip ability between combats.

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.

If the ability causes two Rebel tokens to be created (due to an effect such as that of Mondrak, Glory Dominus), the Equipment becomes attached to only one of them.