Repose of Inevitability

This spell costs {1} more for each life you choose
to gain while casting it (max 8 life gain).
{0}: If your life > 20 you cannot be the target of
spells or abilities this turn.
{0}: If your life > 30 you cannot lose life this turn.
{u}{u}{u}: If your life > 40, all opponents lose the
game.
My time, my life, my glory... it is mine alone.