[Autumn]

I don't actually think fight as one and synchro summon will be too much of an issue at round 0, staying nearby your youkai usually calls for some AoE shenanigans as far as Fight As One is concerned.

Auto Summon could probably be a Summoner base class skill for sure, its not unlike it doesn't fit and serves to ease the pressure at round 0 for non-GS summoners, but as a slight worry, I cannot forsee fast summoners taking it still, as with skip disabled round 0 that spells insta-double turn for them anyways.