港町
Land
この土地が戦場に出るに際し、あなたの手札にあり平地や島であるカード１枚を公開してもよい。そうしないなら、この土地はタップ状態で戦場に出る。
：
か
を加える。
「この小さな島が、君たちのクインジェットの基地にぴったりだってわかって貰えると思う。」 ――スティングレー、ウォルター・ニューウェル
Illustrated by
Marvel Super Heroes Commander#484RareJapaneseLegality
Rulings
You may reveal any land card with either or both of the appropriate subtypes. It doesn't have to be a basic land. For example, you could reveal Canopy Vista from the Battle for Zendikar set to satisfy the ability of Port Town.
Lands don't have a subtype just because they can produce mana of the corresponding color. Port Town itself is neither a Plains nor an Island, even though it produces white and blue mana, so you can't reveal one to satisfy the ability of another.
If a Plains or Island is entering the battlefield from your hand at the same time as Port Town, you may reveal the other land to have Port Town enter untapped.
If an effect instructs you to put Port Town onto the battlefield tapped, it will still enter the battlefield tapped even if you reveal a land card from your hand.