I personally love using binders for the cards I need to access quickly to make my decks but I also use boxes to store all my spares and my bulk
You can always cast the spell without paying its Casualty cost and keep your creature alive, if you're feeling particularly sentimental that day
In the Pokmon Trading Card Game, Magmortar has a powerful card known as Magmortar
When its defeated, exile it, then cast it transformed.) When this Siege enters, reveal any number of Dragon cards from your hand
Zurgo and Ojutai also lets you bounce a Dragon upon dealing damage, which has a number of applications
Unstoppable : used in conjunction with Slow or Quick speed, if an effect is Unstoppable it means it cannot be responded by another card, and it cannot be negated