John, Happiest of all

Vigilance, Lifelink
When John, Happiest of all enters, untap all creatures you control.
The creatures you control can not be tapped by spells or abilities of creatures you don't control.
{x}{t}: Take X cards randomly from you and your opponent's decks and deal them out clockwise. Those cards perpetually gain "Mana of any color can be used to cast this card"
{g/w}{g/w}: Draw a card from a random players deck