Sivir and LeBlanc are busted

Like, seriously. They are so freaking annoying to try and deal with. It just feels like a 3 cost 5/2 with quick attack is so freaking busted, and a 4 cost 5/3 with quick attack and spell shield is even more so. And what's even more annoying is their stupid card that allows a 5+ power card to strike a unit for only 4 mana. Like, unless you are playing a full removal deck, you just lose. Idk it just feels like all of my decks do nothing against them, unless they get super unlucky and draw the wrong cards.

All I can say is I can't wait till the next update when they nerf some cards.

Yes, 5 attack tribal is a deck,

Yes if you don't run countermechanics this deck is very hard to beat 

but NO, this archetype is not op,

it is very vulnerable to non-combat removal that you find primarily in noxus, freljord and PNZ and shadowisles. None of these regions are really that popular right now which could be the actual problem but this archetype is not a problem yet and once people tech against it it will even less a problem

A 3 mana champion who dies to mystic shot isn't anywhere near busted.

Sivir is definitely better due to spell shield but since she only has 3 health, she dies to many challenger unit's and your opponent can't use her for blocking, something that you should definitely take advantage of.

As for Bloody Business, paying 4 mana to strike one unit is not cheap and there are so many ways to play around that card. Reducing the attack with cards like frostbite, quicksand or killing the enemy unit will both cause the spell to fizzle. Of course you can always use counter spell like deny and spell shield if you have access to those.

Hope that helps.

Quote From TheTriferianGeneral

Yes, 5 attack tribal is a deck,

Yes if you don't run countermechanics this deck is very hard to beat 

but NO, this archetype is not op,

it is very vulnerable to non-combat removal that you find primarily in noxus, freljord and PNZ and shadowisles. None of these regions are really that popular right now which could be the actual problem but this archetype is not a problem yet and once people tech against it it will even less a problem

Pretty much this. The game has plenty mechanics to counter the high attack and low health minions. I am also pretty sure they hate facing slow and grindy SI/Freljord decks due to the amount of removal, freezes, chump blockers and what not.

I played a fair bit of Leblanc/Sivir in the first few days of the expansion. I stopped playing it because it's VERY bad against Fiora, Lissandra, swarm aggro ... actually it's hard for me to even say what it's consistently good against.

Neither of those champions needs a nerf.