Starting off by milling yourself and reanimating an Elf (or, notably, an Elf-supporting Tyvar planeswalker card), the card immediately provides the board presence that Elves live and die on
What's not to like in Limited
10) Accumulated Knowledge/Arcane Denial/Boomerang/Brainstorm/Forbid/Force Spike/Gush/Impulse/Intuition/Stifle (Tie) If I didn't mention all of these, I'd get a lot of hate mail
Vaevictis Asmadi, the Dire Vaevictis Asmadi, the Dire has a built-in sacrifice-Chaos Warp that hits every player whenever it attacks
Dragonologist Dragonologist does a little bit of everything you want early on: It digs for dragons, instants, or sorceries when it enters, and then once you start dropping your dragons, it gives them hexproof as long as they stay untapped
Needless to say, though, plenty of folks will be trying to exploit Spiky six ways from Sunday