2018-10-05 : Dawn of Hope's first ability triggers just once for each life-gaining event, whether it's 1 life from Vicious Rumors or 3 life from Creeping Chill.

2018-10-05 : Each creature with lifelink dealing combat damage causes a separate life-gaining event. For example, if two creatures you control with lifelink deal combat damage at the same time, Dawn of Hope's ability will trigger twice. However, if a single creature you control with lifelink deals combat damage to multiple creatures, players, and/or planeswalkers at the same time (perhaps because it has trample or was blocked by more than one creature), the ability will trigger only once.

2018-10-05 : If you gain an amount of life "for each" of something, that life is gained as one event and Dawn of Hope's first ability triggers only once.

2018-10-05 : In a Two-Headed Giant game, life gained by your teammate won't cause the ability to trigger, even though it caused your team's life total to increase.

2018-10-05 : You can't pay {2} multiple times to draw more than one card each time you resolve Dawn of Hope's triggered ability.