Bulwark adds value at any level. Also, the good thing about crests is you can raise them as more and more crests are earned. It's a great crest set so use it on your main heroes when needed.
As far as zerk. I'll try to post a table below but, as a general rule, crest sets provide 2 types of benefits. The inherent one which adds attack and health and the talent bonus. Zerk crests add the most attack so they are great to use on any hero. The talent bonus - you would need to see which hero would actually get it. At level 1, zerk would increase the atk speed on heroes with atk spd of 1,500
Warlock witha 3/8 zerk talent so it wont help him, aries with wg 2 crest(almost), SB wg PD with a revive and a Immo with level two bulwark and a life drain talen pt, please tell me who I should give what crest to who
The zerk crest set would act as a damage booster so you can put it on any hero, even WL. If/when you get a hero with 1,500ms attack speed (like Harpy Queen) then you can move the zerk crests to him/her
Thunder God was a great hero back in the day.... He is still good; it all depends on whether you have anyone better in your main 6 lineup.
Oh so ill probably put it in aries and give SB the wg crest 2 ? And do you want me to list my heroes? If you got things to do and im bothering you please say so i get bored in class so i come here to chat about what i enjoy and etc.
Well Warlock is a 1200ms hero, so 3/8 Berserk would actually bring him to 1000ms. Druid would need a 4 Berserk to go to 800ms, so speedwise that lv1 Berserk crestset would do nothing on him (you get the atk and hp bonus though).