Jaholion, Surge of Gods

Construct (Whenever a creature you control leaves the battlefield, you may pay half its converted mana cost, rounded up, in {u/b}. If you do, you may put a 1/1 blue token artifact creature construct onto the battlefield under your control. You may give it either Flying, Deathtouch or Lifelink until another creature leaves the battlefield)
Whenether an artifact creature comes into play, all players gain 1 life.