Astartes Techmarine

Whenever an artifact you control dies return
target artifact from your graveyard to your hand
with lesser converted mana cost.
{r}, {t}: Regenerate another target artifact until
end of turn.
"Tend to the war spirits all about, but do so in the knowledge that you do the Emperor's duty. Without
your ministrations, no bolt may be fired, and no enemy
slain."