Selfless Begum

Selfless Begum enters the battlefield with a +1/+1 counter for each creature you control.
If another creature you control would be dealt damage, prevent that damage, then move a +1/+1 counter from Selfless Begum to that creature.
True altruism can be a dangerous thing. If you think purely of others and never of yourself, you might find yourself becoming an unwilling martyr.