Armory

Equipment artifacts cost {1} colorless less to equip.
{3}{t}: Search your library and/or graveyard for a card named "Armory Instructor" and put it into your hand.
On your upkeep, if you control a card named Armory Instructor, search your library for an equipment artifact and put it on to the battlefield for free.
On your end step, if you have five or more equipment artifacts under your control, draw a card.