Whenever Bruna attacks it becomes a magnet for any auras on the battlefield (even your opponents!), the graveyard, and your hand
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying (such as a flashback cost), add any cost increases (such as kicker costs), then apply any cost reductions (such as that of Cid's first ability)
Celes lacks any form of evasion, whereas Terra basically always has flying on offense thanks to their triggered ability
That means you can cast them for any color mana, even colorless
Overview - Delver of Secrets Innistrad Remastered has a lot of complexity within it, from its card selection, set design, and mechanics
Its definitely trickier for players who want to play every format, but for those whove found a couple of formats they love and are happy there, they can simply try and tune out the irrelevant products