Fabled Runesmith

When Fabled Runelord enters the battlefield,
you may search your library for a an artifact card
with converted mana cost 4 or less and reveal
that card. Shuffle your library, then put the card
on top of it.
{2},{t}: Remove a +1/+1 counter from a creature
you control: Fabled Runesmith deals 2 damage
to any target.