Changeling Hero
Creature — Shapeshifter
Oracle Text
Changeling (This card is every creature type.) Champion 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.) Lifelink (Damage dealt by this creature also causes you to gain that much life.)Rules for this card
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Champion Rule 702.72
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A characteristic-defining ability that grants the object it’s on every creature type. See rule 702.73, “Changeling.”
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A keyword ability that causes a player to gain life. See rule 702.15, “Lifelink.”