Both clear and precise. That's how I like my answers.

Thanks to the both of you.

Hi, this came up in a recent game of a Druid vs Wizard battle and I couldn't get a decisive answer.

Game setup:
I was playing as a vine druid and had besides my Fellella pixie (can cast only Enchantments) also a Samara tree on the board. Fellella had 2 mana, Samara Tree had 5. Fellella casted an enchantment on a creature but I also wanted it to reveal it in the same action.

Question: Where could the mana required for revealing the enchantment come from?

In this case the caster (Fellella) had enough to cast it but not to reveal it. But if she had, could she also reveal an enchantment?
I've found a topic which said the controller's mana pool (I'd like a confirmation on that), but could the mana pool from a tree also be used (thus effectively turning it in a mana battery)?

Thanks for reading and (possibly) responding.