Mono-Blue Commander refers to building a Commander deck that consists solely of blue-colored cards. This means that all the cards in your deck can only have blue mana symbols. Blue is one of the five basic magic colors in MTG, known for its traits of intellect, control, and transformation.
The Best Mono-Blue Commanders In Magic: The Gathering
Top Mono-Blue Commanders
Best Budget Commanders: Blue MTG Cards - Card Kingdom Blog
Top 7 Blue Commanders in Magic: The Gathering - HobbyLark
The Best Blue Commanders You Aren't Playing in MTG
Best MTG Mono-Blue Commanders, Ranked
The 55 Best Mono Blue Commanders in Magic Ranked - Draftsim
The Best Blue Commanders You Aren't Playing in MTG
The 55 Best Mono Blue Commanders in Magic Ranked - Draftsim
Most fun Mono Blue commander you've played? : r/EDH