Abnormal Acute Healing?
There was a particular fight where we noticed the enemy Vayne gaining health without a pot, the support was dead, and she wasn't AA'ing anyone with a significant amount of lifesteal. The heal summoner spell was also on cd. After the game ended, my adc pointed out he had 30% lifesteal vs. the Vayne's 10% lifesteal yet Vayne's healing done was nearly double his own. Wondering if we missed something or there was a weird exploit?