
ChangelingChangelingThis card is every creature type. (This card is every creature type.)
ChampionChampionWhen this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield. a creature (When this enters, sacrifice it unless you exile another creature you control. When this leaves the battlefield, that card returns to the battlefield.)
LifelinkLifelinkDamage dealt by this creature also causes you to gain that much life. (Damage dealt by this creature also causes you to gain that much life.)
Hover an underlined rule to see what it means.
Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.