Any Class Help -100% Spell Cost Builds

Do you think it would be possible to make a build with -100% or more spell cost for a particular spell? I don't mean a build that is actually useful, i was just wondering if it's possible

 

yea sure just go on wynndata and filter by spell cost%

spells will always cost atleast 1 mana though, no matter how much you reduce it

 

It's quite easy really. In fact, if you neglect any other id's, making a build that gets -100% cost in everything is almost certainly possible. However, this doesn't make spells free; as @weeb mentioned, spells will only cost 1 mana, but will not be free. This is also true of raw cost reduction; for instance King of Hearts can actually decrease the mana cost of heal to below zero theoretically. However in practice, this simply translates to 1 mana. However, if you get it low enough, such as with Warp, you can get a number of 1 mana spells in a row, which is definitely powerful.

 

https://wynndata.tk/s/sdt4i6