
FlyingFlyingCan only be blocked by creatures with flying or reach., vigilancevigilanceAttacking doesn't cause this creature to tap., trampletrampleExcess combat damage it deals to a blocker carries over to the player or planeswalker it's attacking.
Whenever you attack, other creatures you control get +2/+2 and gain indestructible until end of turn.
UnearthUnearthPay eight energy counters: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.—Pay eight . (Pay eight energy counters: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)
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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.