The Life Giver

Gift of Life-At the beginning of your upkeep,
Gain 5 life
Boundless Life-{w}{w} Gain life equal to the total
number of creatures on all players battlefields
Life Shield-{w}{w}{w}{w} You may pay any amount
of life, then tap a number of creatures who's
combined toughness is less than or equal to the
life you payed to use this ability