You should sleeve cards before putting them in binder pages if the cards have significant value
When you see that purple orb behind Alakazam's name, you instantly know several things: it needs Psychic Energy to attack, it's likely weak to Dark-type Pokemon, and it can benefit from Psychic-type support cards
Many tournament players will purchase multiple copies of this Deck to get all the "Gadget" monsters they need
Fraxure's design embodies the classic dragon archetype with a fierce appearance that includes prominent tusks and a robust build, making it a memorable figure within the Unova region
And, more importantly, it gives you the ability to steal Monsters from your opponents Graveyard
If you block an attacking creature then remove your blocking creature from combat somehow (often by sacrificing it or bouncing it back to hand), the attacking creature still counts as being blocked