Umbral Knight

This creature cannot be on the field if Lily, the Priestess of the End is not on the field as well.
When Umbral Knight enters the battlefield, search
your library for a land card and add it to your hand.
{1}{b}: Gains +1/+0 until end of the turn and can
attack three different creatures of the opponent.

"The battle is lost. Our homeland stripped bare...
What fate awaits a people who have lost everything?"