That depends what attack buildings you have, but the minimum is 24 with a max of 26 or 27 depending on tiers and buildings.
I want to delink my Fb account from my android so I can add my alt on there as my main is still currently is still loading on it. My main account is now also running on an iPhone. Can anyone help ?
Roughly once every 1-1.5 years but they'll wait quite awhile til next lands since HFBC is a HUGE jump
Does the Abbysal Blade give a static 10% to atk/spy attack. Perm at max Troop stat (mine is 230m so 23m bfe) or does it matter by troop level?
Yeah, it will go down with your troop levels. So at 100% strength, it will give you 23m BFE, at 10% it will give you 2.3m. They may change it so that ALL BFE scales with your troops(this might take place in strictly EE or it might be an all across change, not quite sure yet. read more on it here).