Prototype R.

•Equipped creature gets +1/+1 and reach.
•Whenever equipped creature deals combat damage to a player, create a copy of the card exiled by Prototype R. Until the end of the current turn, you may cast this copy without paying its mana cost.
•{4}{t}: Exile an instant or sorcery from your graveyard. Only one card may be exiled by this effect at one time. When another card is exiled, the original card is returned to your graveyard.
{bull}Equip {4}