Could someone tell me approximate amount of shards I need to max an hero? I'm currently spending 8k diamonds per week on shards and as a f2p player it worries me that I might run out of diamonds eventually. Also where could I get shards for my high priestess? In first 2 weeks I got tons of S shard chests however now I get none.. The only way I can think of is using convert system and collect a lot of tank/control chests from arena and guild shop, but it feel weird that I have to go through all this trouble to max low class hero.