Planeshifting Spineback

When Planeshifting Spineback enters the battlefield, reveal the top card of your library. If
it's a land card, put it on the battlefield tapped,
if it's a creature card, you gain 3 life
{1}{g}, exile Planeshifting Spineback, return it to
the battlefield under it's owner's control at
the beginning of your next upkeep
"She never knows where she is going or for how long,
but she always brings me gifts when she comes back"