City of Shadows
Land
, Exile a creature you control: Put a storage counter on City of Shadows.
: Add 
for each storage counter on City of Shadows.
イラスト：
The Dark#116レア英語適正
裁定
2004年10月4日
The storage counters aren’t removed when you activate the mana ability.
2009年10月1日
You can activate City of Shadows’s second ability while it has no storage counters on it, though it won’t add any mana to your mana pool in this case. You did not tap it for mana, though, in case any abilities (such as the ability of a Fertile Ground enchanting it) care about that.