Merlin skills

For the raid, 3->1->2.

His 3rd skill is broken. The extra damage on buster cards for 3 turns and crit damage boost by 100% for a turn is too good for one skill. The extra health is also nice.
In future quests where people aren't one/two turning these pillars, getting his party invincibility skill (2nd skill) on cool down quicker is possibly better than his first skill.
Levelling up his first skill doesn't increase damage by much level by level and the NP charge is guaranteed 20%, but again reducing the cooldown is nice and the extra damage is what most people at level 120+ Will want atm.