Varrick and Zhu Li

When Varrick and Zhu Li enter the battlefield, search your library for 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.
{r}, {t}: You may put an artifact card with converted mana cost 4 or less from your hand onto the battlefield tapped.
"Zhu Li, do the thing."