The most known trick with Brainstorm is pairing it with a shuffle effect like a fetch lands ability to shuffle away the cards from your hand you put back on top
Monastery Mentor proved itself to be one of the best finishers in older formats like Vintage, where it's easy to chain together cheap spells and cantrips to potentially make a lethal army of prowess tokens in just a single turn, which is certainly strong but still doesn't really feel broken to me
With pack one failing to deliver on a two-color archetype, we will need to prioritize mana fixing to end up with a functional deck
However, some Pokmon attacks, or abilities, and some trainer cards, allow you or instruct you to attach additional energy cards to one or more of your Pokmon
Yes, Ancestral Mask is very strong, but we only have one in the entire deck, and the rest of the buffs in Pauper are quite weak