Dissolve is strictly better than Cancel, so that would be an easy swap to start with. Other good additions would be Vanishing as a way to protect your commander, and Traumatize to fill your yard with stuff to put on Bruna. Also, Swords to Plowshares or Path to Exile would both be good additions to make your removal better.

Ive been doing some changes dropped some counters for room for spells I find more fun, i dont want to be the mother may I in the table thinking of adding more pillow fort like spells in enchantment form or a adding kor spiritdancer

Try Hall of the Bandit Lord, its a land that gives creatures haste also i made a similar deck its called Big Bad Bruna check it out.

ill see if can find one, paying some life to give Bruna haste swing for the win is scary