Shaper-infused Roa Boss - Arid Lake Map - Charged into the terrain.

As the title says, the Roa boss charged into the terrain and I was able to kill it... However all the loot is on the other side of the terrain. Luckily neither the Divination card, nor the unique that dropped are worth anything much important, however I feel like this is a slight issue should this happen to someone and it drops higher value loot.