add random artifact

: Put the top card of your graveyard on the bottom of your library.

You may activate equip abilities any time you could cast an instant.

Equipped creature gets +4/+0. , Unattach this Equipment: Search your library for a red or white instant card with mana value 4 or less and cast that card without paying its mana cost. Then shuffle. Equip

Whenever an Equipment you control enters, you may draw a card. Metalcraft — Equipment you control have equip as long as you control three or more artifacts.