halimar tidecaller WotC themselves draw a distinction between 'design' and 'development', where design is making cards and development is adapting those cards to the limited / standard environment
Halvar, God of Battle Halvar is the God of Battle, and though Odin is, among many things, seen as the God of War, Halvar most closely parallels Tr, the Norse God who presides over the more honorable aspects of battle, like justice and laws
Not only do you have to get double white mana earlywhich can be difficult when you want to play enough turn 1 green sources to consistently play your mana creaturesbut you also have to keep him paired with something
The alternative commanders you can chose from are the legendary dragon Numot, the Devastator, who blows up lands when it deals combat damage, and Ruhan of the Fomori, a 4-mana 7/7 who attacks random targets