Knight of the White Orchid
Creature — Human Knight
First strike
When this creature enters, if an opponent controls more lands than you, you may search your library for a Plains card, put it onto the battlefield, then shuffle.
Mark Zug
Magic Origins (ORI)
• #21Rulings
The Plains you search for doesn't have to be basic. For example, you could put a Sacred Foundry onto the battlefield.
(wotc • 2015-06-22)
Knight of the White Orchid's triggered ability has an “intervening ‘if' clause.” That means (1) the ability won't trigger at all unless any one of your opponents controls more lands than you, and (2) the ability will do nothing if you control at least as many lands as each of your opponents by the time it resolves.
(wotc • 2008-10-01)
Rulings
The Plains you search for doesn't have to be basic. For example, you could put a Sacred Foundry onto the battlefield.
(wotc • 2015-06-22)
Knight of the White Orchid's triggered ability has an “intervening ‘if' clause.” That means (1) the ability won't trigger at all unless any one of your opponents controls more lands than you, and (2) the ability will do nothing if you control at least as many lands as each of your opponents by the time it resolves.
(wotc • 2008-10-01)