Dragon's character card also has the same ability and the typical red Rush keyword
Depending on your board, this can be a savings of mana or more
The goals with the upgrades are: to give the deck a lower curve, adding cheaper cards and more card advantage To patch up the decks card draw and ramp to make it more consistent To add some more instant-speed action to trigger Alela Leyline of Anticipation is a key piece, and while its a lot cheaper than Vedalken Orrery, its also more justifiable
If yes, the card tends to skew up in rarity
One game you could hit the best spells and draw archenemy instantly or you hit nothing and everyone cries from laughter that you sunk three mana into this
That means you are not splashing that effect unless it is good enough for a real commitment to the color or lack thereof, just like how splashing Treetop Village is often not the best idea (but not always!)