The first allows decks to be made, that really shouldn't exist. If it resolves in it's given deck, you pretty much lost. Your opponent will have lands to play spells or threats to kill you, and you more than likely won't. Wildfire led to some really annoying and deadly shenanigans when it existed, and this is worse than ever with all the green ramp that exists today, not to mention it's best friend Primeval Titan.
The second is -extremely- hard to deal with, without either using cards that are sub-par or dead in most other situations, or just succumbing to the damage/advantage it creates (Condemn which is bad vs. new powerhouses like Fauna Shaman, Primeval Titan, and Sun Titan, and Path ramps your opponent to deadlier things which will get out of your control. Anything non-white will just be a -1 and Vengevine comes back as a major threat most likely the next turn.).
Elspeth gives reach to decks with no business having it (Bant, U/W, anything non-red, etc.), and is a constant threat every turn, in the form of a planeswalker (Can only be dealt with by permanent removal, usually 2+ direct damage spells, or less likely, attacking, which the Elspeth user is definitely going to do something about whether through blocking or removal themselves.)
Bloodbraid Elf, more than any other card, can put real threatening presence on the board, and produce results immediately, while attacking with any early board presence. Also she can be effectively a 7-mana threat, her 4cmc 3/2 haste, immediate threat, self, along -with- another 3cmc such as Blightning, Leech, Thrinax, Knight(otR), or extended-wise, Finks.
Noble Hierarch, aside from being a mana dork that can put you ahead as mana dorks are supposed to, not only can attack itself, but can make your threats even worse mid-late game, and is good at literally almost any point in the game.
About Jace TMS: There's no doubt of Jace 2.0's (over)power, but aggro is way too prevalent and creature quality is way too high right now for him to live too long; sure he puts you WAY ahead vs. control matchups, but the control decks themselves don't match up to the creature quality or combo potential of the more powerful decks in the format (NLB, Titan Force, Naya, etc.).
Fauna Shaman, left alone, can create a situation for your opponent that they cannot deal with, and I'd put her on par with Baneslayer Angel, seeing as she can be removed without too much effort. But if not, she can become just as much of a problem, more if left alone too long, as BSA.
2. Vengevine
3. Elspeth
4. Bloodbraid Elf
5. Noble Hierarch
6. Fauna Shaman
7. Baneslayer Angel
Let me explain:
The first allows decks to be made, that really shouldn't exist. If it resolves in it's given deck, you pretty much lost. Your opponent will have lands to play spells or threats to kill you, and you more than likely won't. Wildfire led to some really annoying and deadly shenanigans when it existed, and this is worse than ever with all the green ramp that exists today, not to mention it's best friend Primeval Titan.
The second is -extremely- hard to deal with, without either using cards that are sub-par or dead in most other situations, or just succumbing to the damage/advantage it creates (Condemn which is bad vs. new powerhouses like Fauna Shaman, Primeval Titan, and Sun Titan, and Path ramps your opponent to deadlier things which will get out of your control. Anything non-white will just be a -1 and Vengevine comes back as a major threat most likely the next turn.).
Elspeth gives reach to decks with no business having it (Bant, U/W, anything non-red, etc.), and is a constant threat every turn, in the form of a planeswalker (Can only be dealt with by permanent removal, usually 2+ direct damage spells, or less likely, attacking, which the Elspeth user is definitely going to do something about whether through blocking or removal themselves.)
Bloodbraid Elf, more than any other card, can put real threatening presence on the board, and produce results immediately, while attacking with any early board presence. Also she can be effectively a 7-mana threat, her 4cmc 3/2 haste, immediate threat, self, along -with- another 3cmc such as Blightning, Leech, Thrinax, Knight(otR), or extended-wise, Finks.
Noble Hierarch, aside from being a mana dork that can put you ahead as mana dorks are supposed to, not only can attack itself, but can make your threats even worse mid-late game, and is good at literally almost any point in the game.
About Jace TMS: There's no doubt of Jace 2.0's (over)power, but aggro is way too prevalent and creature quality is way too high right now for him to live too long; sure he puts you WAY ahead vs. control matchups, but the control decks themselves don't match up to the creature quality or combo potential of the more powerful decks in the format (NLB, Titan Force, Naya, etc.).
Fauna Shaman, left alone, can create a situation for your opponent that they cannot deal with, and I'd put her on par with Baneslayer Angel, seeing as she can be removed without too much effort. But if not, she can become just as much of a problem, more if left alone too long, as BSA.