Armory Guard

A 2/5 body is built to absorb, not attack: low power and high toughness let it bounce off larger creatures without dying and eat smaller ones outright, the classic shape of a wall that buys time against an early aggressive curve. The vigilance rider is the part doing the archetype work, and it only switches on when you control a Gate. That conditional turns a pure blocker into a creature that can swing for two and still keep its toughness back on defense, but only inside the Gate-matters shell the keyword was printed to support. Outside that deck the body just holds the ground floor, a fine speed bump and nothing more; inside it, the upside is a clause that rewards committing to a land subtheme rather than a generic white plan. The design is honest about its narrowness: the rate on the base creature is set so the Gate payoff reads as genuine gravy rather than a tax paid for a worse defender. It belongs to the same family of Gate-tribal commons and uncommons that ask you to build around a lands subtheme most decks ignore, and it is exactly as good as your willingness to do that.