Marinus, Guider of Stars

Substantiate —Whenever Marinus, Guider of Stars becomes tapped, if it's not attacking, each player draws a card and gains 3 life.
{x}{g}{w}{u}, {t}, Discard a card: Search your library for a permanent card with converted mana cost X or less, put it onto the battlefield, then shuffle your library.
"Someone once told me that I could not move the sun. Obviously, they did not try hard enough."