Celestial Agent

{w}, {t}: You gain 1 life for each enchantment you
control.
{u}, {t}: You gain 1 life for each artifact you
control.
{b}, {t}: You gain 1 life for each life you lost this
turn.
{r}, {t}: You gain 1 life for each noncombat
damage done this turn.
{g}, {t}: You gain 1 life for each creature you
control.