For Pokmon card protection , the go-to combo for serious collectors is a perfect fit sleeve slipped on first, then a standard outer sleeve on top
It is ok to have just a little, however, when it comes to both: wanting more AND become too attached to it becomes a problem
But if you need to Fork a spell later in the game that you play, or if you need to Clone a creature you control, you can pay some mana, sacrifice Mirrorpool, and get that key effect in
To make actual use of this monster, Yuri added cards to his Deck, including "Ultra Polymerization" to turn a monster used in a Fusion Summon involving that card into a Tuner
It takes up your turn's Normal Summon, and you need a Galaxy-Eyes in the Grave to make it worthwhile, and you need a Photon/Galaxy on the Field to Normal Summon it this way