|Marisa has 46 HP, which can be massively taken advantage of if used properly. With the Wo Dao Refinement and the HP +5 Seal, this amount reaches up to 56. This amount exceeds the base HP of every character in the game except Arden.
Wo Dao+ has the speed refinement in order to increase the ability for Marisa to double opponents, bringing her speed up to 39. Her attack also increases by one point thanks to the refinement from 43 to 44.
Reciprocal Aid can be used to recover HP from another healthy ally. This keeps her HP high and more likely to activate Fire Boost. You can also use Marisa herself as support for another ally with this skill, as she will likely fully heal them due to her high HP.
Noontime is the skill of choice her, since in a battle which Marisa doubles her opponent, her second hit will trigger the Noontime. This will then heal her a bit as well as increase her damage output due to Wo Dao +'s ability.
Fire Boost acts as a Death Blow that can be triggered both in player and enemy phase so long as the enemy has an HP of 53 or less. This means Fire Boost can activate very often. For example, an Amelia with a refined Slaying Axe (her weapon of choice) has a total HP of 52. Hector with Armads also has a base HP of 52. This skill would also activate against ALL dragons, mages, and staff wielders. The highest base HP out of all of these is Fae's 46, so Fire Boost would activate even when considering Fae's weapon refinement.
- The attack would therefore rise to 50, if no Hone Atk or similar skill is used by another unit.
Renewal is used to constantly heal Marisa in order to keep her HP as high as possible. Nothing else to say here.
- Note: If you plan to attack with Marisa AFTER having used the reciprocal aid to heal an ally, then it's better to go with Desperation 3 as her B-skill, since she would already likely be in that range due to the assist.
The C-skill works best when it fits your team's needs, so feel free to replace it with anything else you may need. Some personal recommendations are Panic Ploy in order to reverse the opponent's buffs and threaten Spd in order for her to do better in battle.
HP+5 is the seal in order to bring her HP to the highest value possible, 56.
Overall, this build seeks to utilize Marisa's high HP stat to its fullest potential, increasing her attack and taking her high speed in order to become an offensive unit who is hard to kill at the same time.
Thanks for reading. Hope you enjoy this build and keep having fun playing FEH! :)