yugioh gx duel academy water deck Yu-Gi-Oh! - Speed - Duel Box Water Deck Yugioh | eBay

It will greatly help you

It's currently unknown if there are any more printed

Even Mega Heracross-ex, Mega Lopunny-ex and many other Pokmon deploy in the field determined to give the maximum and show everyone their courage in expanding megaevolution - TCG Spectral Flames Pokmon

If a face-up Normal Monster(s) you control is destroyed by battle or card effect and sent to the GY: You can detach 1 material from this card

This is a pretty nice effect, since it allows you to special summon a level 3 monster at virtually no cost

There are also special actions called Songs which can be played for free, provided you have a character of the required cost already on board that you can exert to "sing" the song