Creature â Vampire Warrior Ally
Whenever you gain life, each opponent loses 1 life.
The ability triggers just once for each life-gaining event, no matter how much life is gained.
In a Two-Headed Giant game, life gained by your teammate wonâ€™t cause the ability to trigger, even though it causes your teamâ€™s life total to increase.
A creature with lifelink dealing combat damage causes a single life-gaining event. For example, if a single creature 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), Cliffhaven Vampireâ€™s triggered ability will trigger only once. However, if two creatures you control with lifelink deal combat damage at the same time, the ability will trigger twice.