
FlyingFlyingCan only be blocked by creatures with flying or reach., hastehasteCan attack and use tap abilities the turn it comes under your control.
When Jack of Hearts diesdiesA creature dies when it goes from the battlefield to a graveyard. Being exiled or returned to hand is not dying., he deals damage equal to his power to each creature.
Power-upPower-upActivate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn. — : Discard your hand, then draw three cards. Put two +1/+1 counters on Jack of Hearts. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)
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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.