The Golden Plains of Legend

Your commander costs {2} less to cast for each
time it's been cast from the command zone
this game.
Whenever your commander is put into the
command zone from anywhere, draw a card and
Search your library for an artifact or
enchantment card and add it to your hand. Then shuffle your library. Whenever an Artifact or Enchantment enters the battlefield, search your library for a Plains card and put it onto the battlefield. Then shuffle your library.