When Magister Sphinx enters the battlefield, target player's life total becomes 10.1 "These benighted worlds are thick with ignorance. I will educate them. They will listen, or they will die."
Illus. Steven Belledin
2/1/2009: For a player's life total to become 10, what actually happens is that the player gains or loses the appropriate amount of life. For example, if the targeted player's life total is 4 when this ability resolves, it will cause that player to gain 6 life; alternately, if the targeted player's life total is 17 when this ability resolves, it will cause that player to lose 7 life. Other cards that interact with life gain or life loss will interact with this effect accordingly.
2/1/2009: In a Two-Headed Giant game, this ability causes the targeted player's share of his or her team's life total (which is considered to be that team's life total divided by two, rounded up) to become 10. That team's life total is adjusted by the amount of life that player gains or loses as a result of this. For example, if that team's life total is 15, the targeted player's share of the life total would go from 8 to 10, and that team's life total would end up at 17.
Conflux
(Rare)