Underworld Shade

Whenever a creature enters the battlefield, if it
entered from your graveyard or you cast it from
your graveyard, return Underworld Shade from
your graveyard to the battlefield tapped at the beginning of the next end step.
{b}: Underworld Shade gets +1/+1 until end of
turn.
Escape the underworld. Enter the light once more.
Don't look back; your shadow has grown.