Text (5th/6th+errata): Whenever a land enters the battlefield, ~this~ deals 2 damage to that land's controller. [Oracle 2009/07/08]
Triggers on any land coming into play. This includes playing a land or putting a land into play using a spell or ability. [D'Angelo 1997/05/22]
Lands phasing in will not trigger this card (see Rule 702.23d). [Mirage, Page 2]
It determines the land's controller at the time the ability resolves. If the land leaves play before the ability resolves, the land's last controller before it left is used. [D'Angelo 1998/10/19]
