sword of fury and Symphonia Shards

hi i have questions

-Sword of Fury from (Tycoon shop) is it for all classes or only warriors ?

-about Symphonia Shard :- after developers delete her from (deep sea shop) and replace her with muses and other new heros, how i can get shards for Symphonia or in which other event i can get her ?

-and about hela (from deepsea shop), desiree, Aurora, medea, Elpis (from capsule event) and other angels that maxed level 130, will they keeping their shards in their events or will replace in future too with new heros like what happened to Symphonia shards

thanks in advanced