For as long as you control Kotose, you may play one of the exiled cards, and you may spend mana as though it were mana of any color to cast it
This Ink color has a surprisingly balanced range of offensive and defensive capabilities that make it easy to build around
Iconic Cards: Counterspell, Ponder, Damnation, Jace, the Mind Sculptor Popular Decks: UW Control, Jeskai Control, Taking Turns, Esper Control 3 Midrange Midrange decks are popularly said to solve problems, not create them. In other words, these decks are sort of designed to be able to win against every archetype, although they wont bulldoze over anything (the way aggro often wrecks control, for example)
Esper Sentinel is probably the second best one
The best Elf commanders in MTG lead one of the most beloved tribes in Commander for good reason
Since then, gods have boomed in popularity, appearing in Amonkhet, Ravnica, Kaldheim, and even The Forgotten Realms