You can only activate this card if “Mortis, The
Grimm Shadowhand” is your Undead Warlord
and you control no Undead Warriors on your side
of the field.

Discard all cards in your hand, then destroy all Warriors on
the field.

Then all player’s Warlord’s Damage Counter Max (DCM) become 35.

You can only activate “Valley Of Death” once per game.