Lord Metalsmith's Executioner

Haste, First Strike, Deathtouch
When Lord Metalsmith's Executioner enters the battlefield search your library, graveyard, and/or command zone for a card named Lord Metalsmith.
You may play this card for only {x} mana.
{3}{t}: This creature gains Indestructible until end
of turn. Have this creature fight another target
creature you don't control.
{6}: Regenerate this creature or regenerate another target artifact creature in your graveyard.