In addition to an unrestrained desire for power and penchant for monologuing, they also tend to present our heroes with a terrible dilemma: a set of options which all seem bad with no obvious right answer
The attack trigger also nudges you toward that all-in, keep-coming-at-them style that aggressive decks love
Getting two Consecrated Sphinxes or two Keiga, the Tide Stars is very strong
There are plenty of combos that use Sensei's Divining Top, a cost reducer, and a way to play it off the top of your library, like Mystic Forge to draw your entire deck and rack up a near-infinite storm count
Despite looking like a U/W deck that splashed only the tiniest bit of the other colors, The Deck would reinvent itself after sideboarding, turning into a Blood Moon deck despite having just seven basic lands, itself (and this was obviously long before fetchlands)
IV Put two +1/+1 counters on each other Moogle you control