Finally, blues association with wizardry and spellcraft cause it to emphasize instants, sorceries and artifacts over creature cards, much more so than other colors
Goro-Goro and Satoru There is a fair amount of work to really get Goro-Goro and Satoru to generate dragon spirits
The real secret to building a budget mana base is finding ways to leverage basic lands, and there are a bunch of colour-agnostic ways to fetch basics without spending significant tix
I personally think its one of the funniest ones out there, if not the single most funny piece of goblin flavor text
While this boost isn't large, stacking multiple stat-boosting effects helps to make even your weakest Knights a big combat threat
More directly, ways to copy or recur extra turn spells are useful