Blessing of Asclepius

When this enchantment enters the battlefield
choose a creature you control.
This creature now has," This creature can no
longer deal damage, instead, removes curses from
attacked target. If target was a player it also gives
X life to that player, where X is equal to this
creature's toughness. You may target yourself and
other creatures you control."
When this aura is removed or destroyed after it
was cast, remove from the current game.