@Background Human  
She’s not super op. There’s a card, vampire nighthawk, that is 2/3 with flying, lifelink, and death touch for only 3 mana. With some cards, 3 mama can get you quite a bit.

Isn’t there a creature in M14 that does exactly this and is RARE?  
[searches]  
oh, wait, nvm. http://magiccards.info/m14/en/73.html  
hexproof and pro-pone push it into Mythic territory… but unnecessary on her if you ask me

the milfiness and wifeyness are strong in this one.

@Twifan
 
Of course, she could be THE 50$ card to have in deck if you play PONY block.  
Throw her in the real game however, and she’s just OK.

@Kanrabat  
If that was all she did, yes she would not be overpowered. However she has protection from a creature type added along with her Hexproof. Immunity to target spells and effects, along with damage immunity to creatures of her type? For a cost of 3? 4 sure, but 3? I’d be willing to if target creature could not untap while she’s in play making a risk to use such a creature (or having the play use one of those ‘tap target creature’ cards blue decks may have.) but she already taps it.
 
This is of course taking into that there would be other Pony cards that have already been shown existing.

@TempiDrachen  
Thanks for the analysis. I was looking at it from the standpoint of an MLP block, but in the grand scheme of things it doesn’t sound that bad.

Isn’t Bend over more of Rarity’s quote?

“Comes into play” is an old term that has since been replaced by “enters the battlefield”. As for power, Button’s Mom’s effectiveness is highly dependent on how common ponies are in the current metagame. If nobody uses ponies then she’s just a 2/2 with hexproof for 3 but if almost all the creatures are ponies (say, if you’re playing Equestria block) then she’s a nearly unblockable 2/2 with hexproof who also paralyzes a creature for only 3. In other words, she seems like a pony hoser to me.

@Twifan
 
Nah, it’s perfect as is. Dont forget that she’s still a creature and she’s legendary.
 
All she do is paralize a creature. Calling this overpowered make you look like you’re from Ice Age or something.

@Background Human  
With hexproof on it, it is a bit overpowered. If it was without, the card would be fine. Powerful, but still fine.

@Background Human  
Oops, you’re right! Shoot. I can’t go back and change it now. :( Oh well.

I have a nagging feeling that this thing is slightly OP for its cost, but that’s probably just me. It’s been a while since I followed the game, so I don’t know what you can get for 1UU these days. The only definite problem here is that it’s called “entering the battlefield” now, not “coming into play.”

Interesting to note that, were it not for the pro: Ponies, Button’s Mom would be forced to tap herself. Make of that what you will.

@Blackie  
Spending it well buddy, spending it well.

200 Button’s mom…nice

“She’ll suck you dry in the middle of the fray”
 
(what am I doing with my life)