While this does hit red stuff you have to be pretty sure it is ultimately saving you life in doing so else you are helping your opponent
That adds some insurance policy to your more aggressive plays as those looking to swing with characters will need to get past Baloo, Von Bruinwald XIII first, and those looking to sweep the board with big and dangerous songs like Grab Your Swords and Be Prepared will risk pushing the game in your favour, or even handing you the win
Some cards are a bit more selfish, granting keywords only to one creature
Providing two colorless mana and only costing one, an early Sol Ring is unparalleled mana acceleration that can completely warp the course of any EDH game
The only differences are power and toughness
The answer here is that it is much, much easier to build a functional deck with all oddconverted mana cost cards than it is to build one with evenconverted mana cost cards