Gains 500 ATK for each WATER monster on the field, except "Elemental HERO Absolute Zero"
All of these can be purchased using in-game currency, but they cant be purchased using your real money (PTCGO is free to use in-game) but if you want to build up your online deck you can always get yours Pokemon TCG codes at PTCGO Store
(1) Activate if your opponent activates a card effect while there is a face-up "Paracide" card in their deck: the effect of that card becomes "Add one face-up "Paracide" card from your deck to your hand, also you cannot use this card's name until your next end phase"
Fusion, Synchro, Xyz, Link Monsters and even face-up Pendulum Monsters in the Extra Deck are all able to be Special Summon to the Main Monster Zone this way, meaning the more Link Monsters you have pointing at Main Monster Zones, the more monsters you can Special Summon from your Extra Deck
It basically replaces the printed campaign guide(s) and automates everything for you (resolutions, story card assets adding to decks, XP earned/spent, et