Swarm Under the House

Swarm Under the House enters the battlefield
tapped. When Swarm Under the House enters the battlefield, you lose 3 life and destroy target
creature or planeswalker.
{t}: Add {b/g}{b/g}
"After the war, the Dimir decided to stay underground,
even though Lazav saved all of our guild leaders. To
repay him, we look to him and his House as our leaders
until Vraska returns, whenever that will be."
—Storrev, Death's Demise