A Moment....

At the beginning of their upkeep, a player may
elect to sit out one turn. Any player choosing
to do so, must discard a card and for purposes
of game play, that player no longer exists within
the framework of the game until the beginning
of their next turn (they cannot be the target
directly or indirectly of any spells, abilities, or
global game effects unless the game ends during
their absence).
Just a belly rub....