Simply fill a deck with lower-cost instant sorceries, and flying creatures, then cast away and watch Balmor and all other creatures on the board get huge and smash through any opponent's defense
Snapcaster MageSnapcaster Mage gives a spell flashback, nice and simple, and therefore after the cost of Snapcaster itself youre going to be wanting to flashback a reasonably low-cost instant, likely a counterspell or similar interaction piece
Only, instead of you losing life when you cast it, you give your foe the same advantage
With card pages, you will need to slip each card into each pocket, while with a box you can sort your cards into stacks and then just drop those stacks into boxes
It might feel like the only way to deal with something like that is to remove it immediately, which is only a short-term solution when dealing with someones commander