Icejades, the "Krawlers" of the Abyss storyline finally got their own "Krawler Suma" that helps the deck in insane ways, but first lets get acquainted to the playstyle of these crystaline rulers of the Icejade Cenote Enion Cradle .
Icejades one of the most convoluted floodgate that requires 3 cards to get its full potential, requiring Your majesty Icejade Kosmochlor which makes monsters your opponent control only be able to activate their effects in the turn they are summoned if their domain is activated in your field zone Icejade Cenote Enion Cradle , this majestic place fetches dead or banished Icejades and adds them back to your hand, and if you special summon a water monster it can lower the attack equal to the targeted monster's attack. And if both are on the field Icejade Curse comes in and stops the effects of your opponent's monsters from activating the turn they were summoned + giving you some burn damage in case your monsters die. Its kinda insane but since its too hard to pull off consistently it comes in a more grind game'ish scenario.
Two of your most important monsters are Icejade Aegirine and Icejade Aegirine Rahn , the prior fetches an icejade S/T including their Non-opt Rota Icejade Cradle , Altergeist Manifestation which requires your opponent to either control or have in their GY a monster to SS or send to the GY an icejade from deck with a banish effect if one of your monsters die, or Icejade Erosion which we will get to later... she also has an effect to protect herself and summon a water from hand of GY in case she is targeted. As for her grown up form, Rahn allows you to discard any Icejade card or water monster to summon herself and a token in a Swordsoul Like manner (Swordsoul Strategist Longyuan), and locking you into waters, with these 2 you can summon their boss monster Icejade Aegirine Gymir which is just insane, field protection from most forms of removal besides Send/Tribute/Bounce which also banishes the card its activation responded to + copies of it in case there are any in the GY or field and being able to revive herself if a card is banished, or make Swordsoul Supreme Sovereign - Chengying , other plays involve Marincess Coral Anemone to summon back the Rahn.
As for the other Jades, you are using them because of Cradles restriction and for their GY effect in which they can banish themselves if an Icejade is destroyed to summon it back on the field, which can also be triggered by their negate trap Icejade Erosion . Tremora you run at 3 because its a free special summon of any water monster including their only other tuner Icejade Creation Aegirocassis which after tuning you can equip it to your synchro.
The ed contains some basic water links, I:P package and some R4nk water monsters like Bahamut Shark for Toadally Awesome , Abyss Dweller and Number 4: Stealth Kragen
The support is pretty nice for a deck that couldnt even put their synchro on board because of their only tuner being terrible, hopefully konami will give us one more card to help the deck, but for now its serviceable!