the goal is finding something to do with the extra mana that brain in a jar gives you that will let you pull ahead.

harness the storm - lets you double up on spells, but requires that a copy already be in your graveyard. This encourages 4 copies of each spell, and requires that we have a way of discarding spells, or getting them to the graveyard. Only card I can find that does that reasonably is Mindwrack Demon.

card draw - there's just not great card draw in the format. Artificer's epiphany is probably the best option.

mirrorpool - copy spells with the powerful land. There won't be many chances to copy a spell with mirrorpool, and the cost is still high, so any spell that's worth the cost would have to win the game.

clues - probably the best way to turn the mana into real advantage. Trail of Evidence can get clues, but taking turn 2 for BiaJ, and turn 3 for ToE is too much nothing. We'll need languish, lightning axe, harness the storm.