
If this creature would enter and it wasn't cast or no mana was spent to cast it, exile it instead.
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., lifelinklifelinkDamage dealt by this also causes you to gain that much life.
When this creature leaves the battlefield, exile the top ten cards of your library. You may cast any number of spells with total mana valuemana valueThe total amount of mana in a card's cost, ignoring colour. A card costing has mana value 4. X counts as 0 except on the stack. 10 or less from among them without paying their mana costs.
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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.