
LifelinkLifelinkDamage dealt by this also causes you to gain that much life.
Whenever an Aura you control becomes attached to a nonland permanent an opponent controls with 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. less than or equal to that Aura's 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., gain control of that permanent for as long as that Aura is attached to it.
Hover an underlined rule to see what it means.
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.