The Dark Lord's Summons
The Two Towers #117 (x3)
Perfidia
Mordor.  

Peril.

When Revealed: Either place the lowestAttack Harad enemy engaged with you facedown under The Black Gate or reveal the top card from under The Cross-roads and put it into play engaged with you.

"Always more people coming to Mordor. One day all the peoples will be inside." -Gollum, The Two Towers