Giratina, Banished One

Hexproof. Flash. Flying. Protection from black.
Whenever Giratina, Banished One enters the battlefield,
your HP is set to 1, your HP can't be higher than 1
and you can't lose the game while Giratina, The
Banished One is in play.
Whenever this card would be destroyed, replace
this card with Origin Giratina, Distorted One.
This card can't be exiled nor can it be
regenerated.