Eyjafjalla - The Great Healer

Whenever Eyjafjalla - The Great Healer enters
the battlefield, when your opponent's creatures controlled and deals damage to your creatures
then your creatures receive life link
from Eyjafjalla's Toughness. (They can't receive life link if creature is in graveyard or is
in exiled.)
{t}: Add {r}{u} to mana pool and draw a card