Titan of Littjara [Commander Masters] Phyrexian Golem It was an ancient defense

It was an ancient defense of the Dwarves that could only be traversed in single file

Shatterskull Pass is a pretty distant second

Set: Secret Lair Drop Series Type: Instant Rarity: Rare Cost: {1}{U} Return target creature to its owner's hand

Set: Masters 25 Type: Legendary Land Rarity: Rare {T}: Add {C}

“Don't look at it

Titan of Littjara [Commander Masters] Phyrexian Golem It was an ancient defenseSet: Commander Masters Type: Creature Illusion Rarity: Rare Cost: {4}{U}{U} As Titan of Littjara enters the battlefield, choose a creature type. Titan of Littjara is the chosen type in addition to its other types. Whenever Titan of Littjara enters the battlefield or attacks, you may draw a card for each other creatures your control that shares a creature type with it. If you do, discard a card.