Aether-Fused Stronghold

Indestructable
{t}: Add {c}.
{1}, {t}: Untap another target artifact you control.
{2}, {t}: Tap target non-land permanent you don't
control.
{3}, {t}: Discard 1 card. During your next draw
step, draw 1 additional card.
{4}, {t}: Scry 3, then reveal the top card of your
library. If it's a land, put it onto the battlefield.
Otherwise, add it to your hand.