|Winter Chrom can rock the world with Bold Fighter 3 and offensive power stacked on the rest of his kit. Death Blow 3 is the standard Player Phase skill for most damage, while Sturdy Blow 2 adds 4 to his defense, in exchange for a loss of 2 attack. The weapon refine, if available, is always Attack, and the seal choices and specials are made to bolster his offensive nuke as much as possible. In terms of C skill, Armor March 3 is important if no other member in the team has it, as Chrom absolutely needs the extra movement; however, if he is marched by someone else, an armor buff can be taken, or even Panic Ploy 3.
The Slaying Axe+ build slightly edges out over the Brave one in the number of total matchups won, and also those where Chrom survives. With the cooldown reduction, Ignis can be taken, which will always proc on his second hit, assuming the enemy can counter him. The seal of choice is Attack +3, being the one that improves his damage the most.
On the other hand, the Brave Axe+ build allows Chrom to always quad the enemy, if they survive until the end.
While the Slaying build is safer for Chrom, either build can be considered. If using Winter Chrom in arena defense as well, the Slaying build once again outperforms the Brave one.