Lillith, Deadly Siren

Gone Vault hunting
When Lilith, Deadly Siren enters the battlefield,
look at the top 5 cards of your library,
you may reveal a land and put it into your hand,
if this land was a vault, put it instead onto the battlefield tapped.
{1},{t} Lilith, Deadly Siren can't be blocked when attacking until next combat,
elemental weapons used when this is active does
+3 damage