funny thing i noticed: the four latest champion releases (Bard, Ekko, Kench and Kindred) all have some way to make people (whether it's themselves or others) immune to damage for a brief time. have you got any thoughts about why this might be, or is it just a funny coincidence?

Partly coincidence, partly the fact we constantly talk and influence each other. Four different designers worked on those four champions (and you may as well add rework Fiora in with her new Riposte). We notice these patterns and correct for them (it's unlikely there'll be another ability like this any time soon), but if it fits the kit, it fits the kit.

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