Demon of Death's Design

Lifelink
Siphon 3 (As this creature enters the battlefield, you may pay 3 life. If you do, this creature enters the battlefield with an additional three +1/+1 counters on it.)
At the beginning of your upkeep, if you lost life since the beginning of your last turn, return
to the battlefield a creature whose converted
mana cost is less than or equal to the total
amount of life lost.