Ursa Atlantean Ver. Lappis

1. allows you to go into Ursarctic Polar Star more easily with Deep Sea Diva + Ursarctic Polari as you use Coral Dragon to perform basic combo

2. The Accel Synchro Stardust Dragon line requires 8 summons to to go into Baronne de Fleur, so it isn't pre-nib. You can still go into Crystal Wing Synchro Dragon but you will not be safe from S/Ts like Evenly Matched.

3. You can still summon Adamancipator Risen - Dragite post 'Alpha Radiation' combo under WATER lock. This is the more valuable summon as the archetype has no innate S/T negates

4. This version is so much more expensive, Accel Synchro Stardust Dragon and Baronne de Fleur are disgusting

5. After labbing it feels like Shamisen Samsara Sorrowcat is probably best in this version if you can find space for it, the best take is probably to replace 1 Ursarctic Polar Star for 'Sorrowcat'.

6. This version is more consistent as you can discard 'Ice Barrier' with Desert Locusts and Coral Dragon, you can also still combo with Ursarctic Mikpolar and Neptabyss, the Atlantean Prince in a constructive way

7. This version plays 1 extra brick for virtually the same pay-off

8. There are situations where Adamancipator Risen - Dragite and Crystal Wing Synchro Dragon are better than Baronne de Fleur individually but the flexibility gained by summoning 'Baronne' may outweigh the longevity of the former two. If we can standardise 'Sorrowcat' as a part of the end board we would be able to cycle 'Baronne' regularly gaining multiple negates.... This would make this version the best one.

9. Brionac, the Dragon of Icy Malevolence is a new card to play with and could revolutionise the deck since it would become the best way for a non-tuner Lv6 Synchro monster to give us a free discard. This means that you can have the discard, summon Barrone and retain the Poseidra in hand this would only be performable in this version of the deck

10. It's hard to play Tatsunoko in the deck as Poseidra, the Atlantean Dragon is integral to performing the 'Alpha Radiation' combo using Diva/Neptabyss and you only draw 1 since the other search is used to add Lappis Dragon. It's mostly for turn 2 onwards.

11. This Extra Deck and Main Deck are just way too tight, so much so that it throttles your midgame, which is your whole win con