We can change for free?? Does it really mean what I think??
I'm not sure, but it looks like you can switch from one talent to another.
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To me looks like after buy a slot, you will have that talent saved.
If we can only buy 1 slot, maybe that will means we can have a same hero with 2 main talents (we would be able to swap between them).
Not sure if this would work for one hero or we will be able to swap between heroes those "memorized" talents.
How ever, is not cheap. At least for me, 20k shards are a big thing XD
But this would be the end of many dupes of the same hero.
this thing was introduced so people don't have to have dup heroes in altar of same hero just with different talent. ex. Ra with zer/revite or hellspawn with Deadly strike/corrode etc.