This clever loop transforms a simple aquatic mutation into a devastating drain engine. It all begins when you activate Benthic Biomancer's adapt ability, which places a +1/+1 counter on it and triggers its own looting ability to draw a card. That card draw immediately commands Queza, Augur of Agonies to siphon life from your opponent while granting you life in return. Here is where Light of Promise works its magic: every point of life you gain triggers the enchantment to place a fresh +1/+1 counter back onto Benthic Biomancer. Because placing that counter restarts the entire cycle, you can repeat this self-sustaining sequence to grind your opponents down to nothing.