2004-10-04
Does not trigger on a card on the battlefield being changed into a creature.
2004-10-04
The ability will not trigger on itself entering, but it will trigger on any other creature that is put onto the battlefield at the same time.
2005-08-01
The life gain is mandatory.
2005-08-01
Two Soul Wardens entering at the same time will each cause the other's ability to trigger.