Hello happy Commander fan as well as those for other casual/multiplayer formats like Highlander, Five Color, Type Four, Peasant and Pauper
If one of these salty commanders interests you, feel free to build it
For example, Greater Basilisk's deathtouch ability will likely convince an opponent to avoid blocking even if they possess a creature with greater power and toughness than Greater Basilisk because even a single point of damage would mean their creature's death
Rather than paying five mana, you can exile a Blue card from your hand and pay one life instead
First you can look at the top card of your library all day long
Proliferating twice is very flexible, so you can go with blue creatures that have +1/+1 counters, planeswalkers, or artifacts with charge counters