life\'s killer defense

Each other non-Aura enchantment is a creature in addition to its other types and has base power and base toughness each equal to its mana value.

Equipped creature has deathtouch and lifelink. (Any amount of damage it deals to a creature is enough to destroy it. Damage dealt by this creature also causes you to gain that much life.) Equip (: Attach to target creature you control. Equip only as a sorcery.)

Whenever one or more creatures attack, this enchantment deals damage to each of those creatures equal to the number of attacking creatures.