Death and taxis talent completely denies Buck's healing and saves you 1800 credits and you can easily out DPS him which makes him a free pick
and you don't have damage falloff so you can take advantage of that and fight him from long range
In close range, depending on their timing of popping their Magic Marks on you, Moji can deal up to 1000 damage per second. Never give her a chance to flank and make sure to focus her down after she pops her Magic Barrier and scampers away.
Ash aint safe from your ult during hers, so if you see an Ash ulting on the point for the sake of touching, use your ult to prevent the team from regrouping fast and deny any potential pushes.