
LifelinkLifelinkDamage dealt by this also causes you to gain that much life.
Whenever another creature diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., put a +1/+1 counter on Elenda.
When Elenda diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., create X 1/1 white Vampire creature tokens with lifelinklifelinkDamage dealt by this also causes you to gain that much life., where X is Elenda's power.
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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.