*** Attribute: Water
When this card is Normal Summoned, you can send 1 WATER monster from your Deck to your Graveyard to add 1 "Genex Controller" from your Deck to your hand.
ATK: 1200 DEF: 600
The reason behind my title is due to this card. This card can mill off a WATER monster to get a Level 3 Tuner monster. At first, you'd think to use it with such cards as Treeborn Frog, but at a closer glance, you'll begin to realize that you can dump such cards as Elemental Hero Ocean and Elemental Hero Bubbleman. Why'd you choose Elemental Hero Bubbleman? It's because if you are in a top decking situation and you were nuked by Black Rose Dragon, the 2 extra cards might do you some good, and with this deck's synergy needing to have field presence and most of them requiring a card to discard from your Hand, eventually, you will run out of cards.
Unfortunately, that won't due for an explanation because it's not consistent and people can't predict that far ahead, so they don't overextend as much. So, this card becomes forgotten.
In any case, Elemental Hero Absolute Zero is quite known to people, and some of those people run that card as their main Fusion in Genex Hero along with the Synchro Summons that it provides, but how can you get an instant 2500 easily without Future Fusion? How can you bring out such cards without going -1 or -2 right off the bat? So, let's go into this a bit further.
Elemental Hero Prisma
**** Attribute: Light
Show a Fusion Monster from your Extra Deck to your opponent. Send a Fusion Material Monster listed on that Fusion Monster from your Deck to your Graveyard to treat this card's name as that of the monster sent by this effect until the End Phase of this turn. This effect can only be used once per turn.
ATK: 1700 DEF: 1100
But, why him? He can't do much except dump a card that you can use for an Elemental Hero monster, typically, and you can't use his effect on Elemental Hero Absolute Zero, so why bother? Ok, now, let me show you why I suggested Elemental Hero Bubbleman as a second purpose.
Elemental Hero Mariner
***** Attribute: Water
"Elemental Hero Bubbleman" + "Elemental Hero Avian"
This monster cannot be Special Summoned except by Fusion Summon. If you have any face-down cards in your Spell & Trap Card Zone, this card can attack your opponent's Life Points directly.
ATK: 1400 DEF: 1000
With Prisma's effect, you can dump Elemental Hero Bubbleman to your Graveyard to easily get access for an Elemental Hero monster or a WATER monster in your Graveyard when you use Miracle Fusion for your Elemental Hero Absolute Zero. But then, how can we search out such cards easily? Elemental Hero Stratos and E - Emergency Call are the answers.
Thanks to LightGrunty for providing excellent Youtube duels that inspired me to consider making Genex Hero. Hopefully, I'll be able to provide a deck list soon, but other than that, enjoy!