Anduin uses his Mind Vision from the lighthouse to determine the boats are likely filled with at least 30 human tradesmen.
Wei Wuxian and Moiraine will use a fog clearing talisman and weaving to try and clear some of the fog from the shoreline. Then Wei Wuxian will control the mermaids he can from the shore near the lighthouse and use that to steer a boat that contains whatever supplies they could gather (food, drink, repairs for their ship), Lily, Akira, and Allison. The boat will be warded by Lily and Moiraine will use weaving to control the air and water to propel the boat faster through the water.
Moiraine and Anduin will use weaving and Light magic from the shoreline to start blasting mermaids/the water and generally create a distraction to draw the mermaids attention away from the boat.
Akira and Lily will defend the boat from the mermaids while it’s in the water, then once they are close enough that the Amplifying Charm will ensure Allison is heard by the people on the lifeboats, Lily will amplify Allison's voice so that she can rumor them ("I heard a rumor you went back to fix your ship, then sailed back the way you came to look for another place to come to shore"). Akira defends the boat while they do this.
After that’s accomplished Lily will apparate herself, Akira, and Allison back to the lighthouse while Moiraine and Wei Wuxian get the boat of supplies to the people in the lifeboats, and they all hope for the best...
THE PLAN:
Wei Wuxian and Moiraine will use a fog clearing talisman and weaving to try and clear some of the fog from the shoreline. Then Wei Wuxian will control the mermaids he can from the shore near the lighthouse and use that to steer a boat that contains whatever supplies they could gather (food, drink, repairs for their ship), Lily, Akira, and Allison. The boat will be warded by Lily and Moiraine will use weaving to control the air and water to propel the boat faster through the water.
Moiraine and Anduin will use weaving and Light magic from the shoreline to start blasting mermaids/the water and generally create a distraction to draw the mermaids attention away from the boat.
Akira and Lily will defend the boat from the mermaids while it’s in the water, then once they are close enough that the Amplifying Charm will ensure Allison is heard by the people on the lifeboats, Lily will amplify Allison's voice so that she can rumor them ("I heard a rumor you went back to fix your ship, then sailed back the way you came to look for another place to come to shore"). Akira defends the boat while they do this.
After that’s accomplished Lily will apparate herself, Akira, and Allison back to the lighthouse while Moiraine and Wei Wuxian get the boat of supplies to the people in the lifeboats, and they all hope for the best...