What is dead can never die.

I will now narrow this list and shed the no longer relevant pieces. I will then look at all cards that benefit the deck collectively and decide on those first. Then I will divide the remaining cards among Haakon, Squall, and the Templars, in that order.

Mesmeric orb almost makes the cut, until I realized if I hit big artifacts I don't get them back. I believe the two baubles make the cut. In a list as tight as this one functionally making the deck smaller is...maybe not so great? Higher impact cards would be more meaningful? We already have Squall rolled up so these will seldom get recurred. Wild.

Kinsbaile cavalier, knight exemplar, and exanfinatir mage added as knights good for everybody.

Haakon's first choice is Westfold Rider. This is a solid answer, runs havoc, self sacrifices, and plays well with the few cost reducers. He summons mayhem to his arsenal.

Squall wants gun blades and glory. He does not fear death and lower priorities of squires. He chooses buster sword.

The legion selects Knight's charge as both an anthem of sorts and a recurable mass recursion for Templar. 88.

Haakon selects crib swap as another answer that also works well with the reducers and creates terror. 89

Squall chooses sword of feast and famine. Few other options on the first attack that do or payoff as much. 90.

The legion chooses mirror box, 91. A payoff for being legion that can come down early.

Haakon chooses Glory. His domain is the graveyard, and he is in charge of the angles. Protection, evasion, evocation. 92.

Squall chooses Genji glove. Expensive, but allows for him to work with the legion, and the extra combat helps both. 93.

The Legion sees Squall Gengi glove and wants that to happen more often. It selects the eternity elevator to both enable a T6 cast equip and the achievable upside, as well as being tutorable. 94.

Haakon wants more discard, to deal with him and glory getting into hand, and promote more recursion. He selects mask of memory for Squall to wear. 95.

Squall chooses the Aetherspark. It increases his power, the power of the deck, and gives another explosive mana option for high cost stuff. It is also Templar tutorable. 96

The legion sees what is possible with big mana now, and chooses the Ten Rings to let the cards flow. 97

Haakon calls Dauntless Bodyguard to service as his last act. Old faithful, protects Squall, him, knight exemplar, and walls of ba sing se. 98.

With indestructible and mana complete, Squall selects Worldslayer as his final blade. 99

The legion sees the preponderance of legendary artifacts and draw, and sees the lithoform engine as the highest upside. It also is tutorable, and can copy a Squall trigger. 99

For a bonus, we the legion also selects mindslaver as a high impact activation that can't be left on the table. Not only is great the first time and is effectively castable, but with mistveil plains and active Templars "goes infinite".

This looks godly awesome. A far step from the more enabling and meek coalition building knights, to a hoard of badass's coming for it. Every turn we aiming for progressively kicking teeth in, while still based in combat primarily. We even ended up with 10 legendary targets, that also don't clunk up the deck if drawn. Haakon still has his traditional role, but as support as opposed to everything, and largely keeping the Templars moving. Squall doesn't what Squall is won't to do. And we now have a legion that puts relics into play as opposed to an equipment package. Wholly awesome.