
Whenever Jerren enters or another nontoken Human you control diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., you lose 1 life and create a 1/1 white Human creature token.
: Target Human you control gains lifelinklifelinkDamage dealt by this also causes you to gain that much life. until end of turn.
At the beginning of your end step, if you have exactly 13 life, you may pay . If you do, transformtransformTo mill a card, put the top card of your library into your graveyard. Jerren.
FlyingFlyingCan only be blocked by creatures with flying or reach., trampletrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking., lifelinklifelinkDamage dealt by this also causes you to gain that much life.
Sacrifice another creature: Draw a card.
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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.