To build a tier one deck, you are almost always shelling $160 for Gideon, Ally of Zendikar, $280 for Jace, Vryn's Prodigy, or *god forbid* $440 for a play set of both
It communicates a sense of impending doom that works across a multitude of artistic media and language
If its in the command zone, you need lots of ways to kill your opponents creatures and mana to either grow Shelob, Dread Weaver with +1/+1 counters or grow your board using your opponents cards
Teenage Mutant Ninja Turtles Teenage Mutant Ninja Turtles play booster boxes might have a few cards that look like they came from a New York sewer, but when that turns into a reduced cost for the box overall, I'm good with that
Crew 1 makes it very easy to have at least a few of them active each turn, and you only actually have to sacrifice three permanents to turn the entire fleet into flying creatures