玄铁驻防

Text:

受此工事的地不会毁坏。
每当受此工事的地成为横置时，目标生物得+1/+1直到回合结束。
构工（：装备在目标由你操控的地上； 构工的时机视同法术。 此牌进场时并未装备，且该地离场后，此牌依旧在场。）

Rulings:

• 5/1/2007 Fortification is to lands what Equipment is to creatures. Except for the difference regarding what kind of permanent it can affect, Fortifications and Equipment follow the same rules.
• 5/1/2007 If Darksteel Garrison and the fortified land would be destroyed at the same time, only Darksteel Garrison is destroyed.
• 5/1/2007 The second ability triggers whenever the fortified land becomes tapped, not just when it’s tapped for mana.
• 5/1/2007 The triggered ability is mandatory. If you don’t have a creature to target, you must target another player’s creature, if possible.