+SPD -DEF Tiki (Young)

Breath of Fog is amazing, I use her in arena assault to one shot a Grima.

-def isn't preferable but it's fine. If you use lightning breath +spd with steady breath, she has a respectable amount of defense and HP and she's hard to double. If you use BoF then the effect brings her def back up a bit. On a +spd Y.Tiki I like lightning breath +spd because her res is also good; my preferences are Y.Tiki +spd and A.Tiki +atk using BoF or +def using lightning breath.

I have been trying with a +Spd -Hp Y!Tiki and it seems like Lightning Breath+Spd is the better choice for her when being alone, and Breath of Fog when she is in a dragon team, but performs better with lightning breath.

Breath of Fog suits more a +Def or +Atk A!Tiki