[NIKKE] Yuni - Infinite Ammo buff
Found a pretty interesting strategy with Yuni that results in effectively infinite ammo for your team - due to the way max ammo buffs in this game work, your magazine gets refreshed to full instantly whenever a max ammo buff wears off. Since Yuni's buff includes a 5-second-duration buff that gives +1 max ammo, this means you get effectively infinite ammo on any characters with a magazine that lasts longer than 5 seconds. All you have to do is make sure you don't fire a fully charged shot more than once every 5 seconds.
I'm not sure if this is intended - given how insignificant +1 max ammo is, it doesn't have much practical application outside of infinite ammo refreshing so it seems to be intended. However, this doesn't work if you leave Yuni in auto mode since she continually refreshes the buff with full charged shots, meaning it has no chance to drop off and thus doesn't work. Regardless, it's a quick and easy way to boost your damage by a pretty significant amount if you happen to run Yuni in your team.