Giltar, The Everlasting Shadow

When Giltar, The Everlasting Shadow is cast you
gain 3 life and put +1/+1 counters equal to the life you gained that turn on Giltar, The Everlasting Shadow.
Lifelink, Infect
When Giltar, The Everlasting Shadow exits the battlefield, you may gain
life equal to the number of +1/+1 counters on it.