Quote from Pete the pancreas »
Regarding Birgi, compared to Kykar, this card is stronger solely for the fact that creatures work as well for her ability. Plus, this card promotes effects like Mindmoil to cycle through a deck, essentially pulling 1 cost instants or 0 cost creatures to grapeshot for lethal or Aetherflux Reservoir. And I wanted to keep it brief and left out a bunch of info which is me being a beginner to card reviews.
For Cosima, she’s still not that good. Sure you draw a bunch of cards, but she doesn’t have haste, you have to run multiple fetches, for a payout that works really well... chancing that you pull lands. There are a bunch of other mono blue commanders that do that job better, and the boat god part was solely for comedy and the select few people that like dolphins.
Regarding Maja, the infinite is Life and Limb and Maskwood Nexus.
Regarding Birgi, God of Storytelling vs Kykar, Wind's Fury, I think there are enough differences that they don't preculde each other from being played - that said, there's a lot of overlap between them. As far as storm combos go, I think the advantage has to go to Kykar - both have the ability to essentially "refund" 1 mana from spells, but aside from the extra colors, the ability to stockpile spirits in prior turns can give Kykar a significant head start on preparing a combo turn. This can also be achieved with other sources of spirit generation prior to dropping Kykar, as well as the creatures being a threat in their own right, offering more win conditions. Creatures also offer alternate use cases with other sac outlets or value engines. Overall there's just a lot more flexibility.
Where Birgi, God of Storytelling really shines though is her back face. Having both options of mana 'reduction' OR card draw in the command zone lets her fill either half of the equation depending on what's missing. That is insanely powerful as an ability.
Honestly though, considering that any UR commander is storm-viable, and how much Birgi adds to any such deck, I expect to see Birgi in the 99 considerably more than in the Command Zone.
For Cosima, God of the Voyage, I think both faces are great. Early in the game she can ensure you hit early land drops. You can drop the boat on turn 2, then a 2 drop creature on 3 (such as Ghostly Pilferer), crew and attack, even if you didn't have a third land.
As far as her main face with the card draw, Tireless Tracker is a highly popular card. Part of this is that he gives green some extra card draw, especially some that is not tied to creatures (other than the tracker himself being one). Green also ramps more, so can make more clues...
However... it still costs 2 mana per clue that you crack for card draw. Cosima is a similar effect - Land = Draw, except that she's free.
Again though, as with Birgi, being able to fix early lands, or late game draw, is a powerful ability to have in the Command Zone. I think that flexibility is what will really make Cosima interesting.
I hope you have a sac outlet out or some other way to interrupt that Maja, Bretagard Protector combo, otherwise you just drew the game... =D