when Knowledge Pool is on the Battlefield and I cast a spell from exile, can I pay additional mana costs such as kickers?
when Knowledge Pool is on the Battlefield and I cast a spell from exile, can I pay additional mana costs such as kickers?
Yes, you can.
Fluttershy is best pony.
but i read before that if you cast a spell for free u are not allowed to pay kicker
Well...you heard wrong.
Fluttershy is best pony.
probably you are confused with putting the card into play rather then casting, for example with elvish piper, in which case you would not be able to pay the kicker cost