Machina Fortress

Discard artifact creature cards with total mana
value 8 or greater: put Machina Fortress from
your hand or graveyard onto the battlefield.
Activate only as a sorcery.
Whenever Machina Fortress becomes the target
of an ability an opponent controls, look at that
player's hand. You choose a card from it. That
player discards that card.
When Machina Fortress dies, if it was dealt lethal combat damage this turn, destroy target
permanent an opponent controls.