Mercyque, Symbol of Smith

When Mercyque, Symbol of Smith enters the battlefield, you may search in your library and/or
your graveyard for a cardsmith card with
converted mana cost X or less, reveal it and put
it into your hand, where X is the number of cardsmith card you control.
Whenever a cardsmith card enters the battlefield
under your control or dies, put a +1/+1 counter
on Mercyque, Symbol of Smith.