Ugh... well that hurt and honestly I f*** up. I knew it had Incinerate but when I get little feedback or questions, mistakes like this happen. Initially I had Lily at G13 or would have been out of harms way. Yet in doing so likely wouldn't have been able to put Simisear to sleep. In any case, we have no choice but to use the Revival Herb now since we need Lily's Sleep Powder. As such, I advocate Susato move to E14 and use it to Revive Lily. Then Lily would move to D14 and use Sleep Powder on Simisear(which is rolling the dice but we have no choice). Waterproof is flinched so he's unavailable. Robin moves to H14 to use its last use of Psywave on Seviper(dropping it to 45), Glacier moves to K14 and uses Icy Wind(halves its movement by giving it Slowed status effect, although its Ability may prove to be an issue) and Unicorn stays and uses Quick Attack. Combined we may not do enough to take Seviper down so in the event that is the case, Mercy can move to L7 and fire a Stick at Seviper. Odds of that move working is relatively low(as is the fact its Not Very Effective) but its better than being near Liepard with no effective moves. Only other options are to go Mimic on Liepard's Fake Out but that act doesn't do anything but delay taking it down and to go heal on a Flower at J8. As for Alex, he can either go heal on a Flower or do what he can to Liepard with his Attack Power now returning to normal. Bite won't do much but comes with a chance to Flinch or he can use Quick Attack/Swift to deal modest damage.
Hence, here's the moves broken down: