Lies.for godness sake pls nerf the *3 legendary mission (the one in the middle)people cant clear it in 15 turns unless they use 3 seraphina,make it available for 2,and not all player have teleport boss/pull skill so the boss need at least a few turns for the seraphina to walk in melee range either.
I used only 1 Seraphina to complete the 15 turns. No heroes which pull or swap positions. No heroes which have limit break as well. Though I spent tons of potions.
You are just not trying hard enough.