Xander, Tactical Supervisor

When Xander, Tactical Supervisor enters the battlefield, search your library for a soldier card and place it on the battlefield without paying it's mana cost. If that card has an "X" mana cost instead of a number, choose a number 1 - 8 for X
{x}, {t}: Search your library for any artifact or creature card with converted mana cost X, reveal it, then put that card into your hand.