|Breath of Fog offers Tiki new options in terms of running a mixed phase build with a weapon that has higher attack for player phase, and similar enemy phase potential.
For this build, +Spd is the best boon, as it bolsters her ability to both dodge enemy doubles and player phase other opponents. Otherwise, +Def is another great boon, as while it hurts her player phase it helps out her tanking potential. -HP is the best bane if one isn't looking to use ploys. -Res is acceptable, but the superbane it comes with means that you'd have to worry about player phases Green Breath units to mitigate the damage they could do to Tiki.
Breath of Fog is the weapon that define Tiki from her other dragon counterparts (though not her adult form). The effective against damage is nice for giving her player phase options vs Green Breath, but just the MT increase of Lightning Breath+ also makes this an attractive option. Both the Skill and +Spd refine are strong on Tiki. The skill refine reinforces Tiki enemy phase, while if you went a speed boon, the speed refine helps push her speed to the max. If you decide not to go speed and not fulfill the bond condition, you can just run a +Def refine.
Reposition is a standard movement assist for tanky units, but can also be replaced for other movement or rally skills.
Moonbow allows Tiki to get off a special each combat, whether player phase or enemy phase. It shines over Glimmer in situations where Tiki is hitting twice, as the only units that should be able to survive two hits from her are the tankiest enemies, where Moonbow would do more due to scaling with the enemy's defenses.
Distant Counter allows Tiki to counterattack against all foes, increasing her coverage to be the same as Lightning Breath.
If you don't have DC, or want to focus on Tiki's melee fighting potential, Fury 3 bolsters all of Tiki's stats, which she wants to hit harder, take less damage, and better outspeed enemies.
Quick Riposte 3 ensures Tiki's enemy phase fighting power, as against hte fastest foes while she can reach the speed to not get doubled by them, she won't be abel to reach the speed in order to naturally double them herself.
Alternately, one can choose to go for empowered specials with Wrath 3, which after first combat can help her take out tougher foes.
Spd Ploy 3 can help turn speed matchups into Tiki's favor, as a lot of the fastest units either die in one hit (mages) or have low res. However, her C slot is super free as other good options include Atk Ploy 3, any Hone, Fortify, or Drive also work well.
Close Def 3 greatly helps Tiki's enemy phase, allowing her to better duel opponents. Other skills such as Distant Def 3 also are great choices depending what your team needs.
If one decides to not run Quick Riposte 3 as the B skill, it should be run as a seal.