At the beginning of your upkeep, if you control a green or white permanent, target player loses 1 life. If you control a green permanent and a white permanent, that player loses 3 life instead.
Legalities
Not Legal
Alchemy
Brawl
Explorer
Future
Gladiator
Historic
Modern
Oldschool
Pauper
Paupercommander
Penny
Pioneer
Standard
Standardbrawl
Timeless
Legal
Commander
Duel
Legacy
Oathbreaker
Predh
Premodern
Vintage
Rulings
2004-10-04
It can make a player lose 0, 1, or 3 life, but never 4.