Evasion

Secret — As long as it isn't your turn, turn Evasion
face up whenever you lose life, except from your
own activated or triggered effects.(Cast this card
face down. It keeps its card types and text, except
your opponents cannot read that text. You must
activate its secret trigger whenever possible.)

When Evasion is turned face up, sacrifice it and gain
shroud and protection from everything until your
next upkeep.