I certainly have been having tons of success with blue, but the format is quite well balanced, so every color has multiple good decks you can get into
It gives you a cheap, small damage sweeper in the early game, or you can foretell it to be a more impactful sweeper later on
These two events opened the door and in a desperate bid to defeat the Dragonlords, the rebellion leaders gathered at the Spirit Dragon's nexus and enacted a dangerous ritual, summoning five spirit dragons who were able to overthrow the Dragonlords
This goes to show that a card can be banned for synergizing too well with a deck as a whole and not a single card in particular
For example, copying Goblin Electromancer will result in a 2-mana discount to all your instant and sorcery spells
In Magic terms, the initiative is a designation that a player can have during the game (similar to the monarch from some other sets)