Lauterkeit

Kreatur — Elementarwesen, Inkarnation 6/6, 3WWW (6)
Fliegend
Falls ein Zauberspruch oder eine Fähigkeit dir Schaden zufügen würde, verhindere diesen Schaden. Du erhältst so viele Lebenspunkte dazu, wie auf diese Weise Schadenspunkte verhindert wurden.
Wenn die Lauterkeit von egal woher in einen Friedhof gelegt würde, mische sie in die Bibliothek ihres Besitzers.
Illus. Warren Mahy

Creature - Elemental Incarnation
Flying
If noncombat damage would be dealt to you, prevent that damage. You gain life equal to the damage prevented this way.
When Purity is put into a graveyard from anywhere, shuffle it into its owner's library.¹

Crystal Keep Rulings Summaries

• The last ability is different from a "goes to the graveyard from play" ability in that it triggers after it is in the graveyar and not as it leaves play. This means that if it lost the ability while in play, it would still trigger, but if it loses its ability in the graveyard (as with Yixlid Jailer) that it won't trigger. [Lorwyn FAQ 2007/09/25]

Format Legality	Legal in Vintage, Legacy, Extended, Standard
Printings (1/9)	Lorwyn (Rare)