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
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
The Flickering creatures which are a subset of the protective magic of white can often cause a loop
For example, copying Goblin Electromancer will result in a 2-mana discount to all your instant and sorcery spells
Back when people played for ante (and in current 5-Color Magic ), this card alone would win game after game after game
It's also really well costed: you can play it for six colorless mana, three Sultai mana, or anywhere in between