Aetherborn Spires

When Aetherborn Spires enters the battlefield,
you get {e}.
{e}, {t}: Search your library for a Swamp
card, put it onto the battlefield tapped, then
shuffle your library. You lose 1 life for each
Swamp on the battlefield.
{2}{b}{b}{b}: Creatures lose indestructible and
hexproof until end of turn.