Team Comp-Blind,Draft/Ranked

Draft/Ranked
The best Jungler's are:
Fiddle-Instant Silence, Great Fear, and Superior Survivalibility
Amumu-Great Stun, Good Latch On.
Maoki-Fast Jungle, Good Stun, Great Defensive Ult
Skarner-Great Latch On, Good Defense.
Shen if not banned-Fantastic Ult, Minor Heals, Decent Taunt.
Jarvin-Great Ganking Potential, Semi Useful Ult Great for Ganking Bot Lane, so ADC can drop the guy trapped.
Cho'Gath-Great Knock Up, Great Silence, Semi Decent Ganks.

The Best Supports are:
Janna- Good Knock Up, Extra AD, Very Fast, Great Heals/Knockback
Sona-Great heals
Soraka-Fountain of Youth
Blitz if not banned- Great Pulls, Great knock up, Great Silence.
Alistar if not banned- Great knock up, Great Knock back, Minor Heals
Malphite if not banned- Decent Slow, Fantastic Knock up(Perfect for team Fights)

The Best ADC are:
Varus-Great range, ok early game dmg, nice Ult.
Ashe-Slows,More Slows, and excellent Stun/slow
Caitlin-Good Traps, Good Range, Great Ult.
Graves-Good DMG, Decent Blind
On-Hit/AP Teemo YES he is a ADC- Fantastic Blind, DOT OP, Slows/DMG
Kayle-Slow,Heal,Invuln.

The Best Tops are:
Volibear-Unlimited Sustain, Flip,Slow, Great DMG.
Malphite if not banned- Decent Slow, Fantastic Knock up(Perfect for team fights)
Shen if not banned- Fantastic Ult, Minor Heals, Decent Taunt.
Rengar- Great DMG, Great Ult for when its time to gank, Nice Slow.
AP Teemo- Fantastic Blind, DOT OP, Slows/DMG
On-Hit Kayle- Slow,Heal,Invuln.
Irelia- FUCKING ANNOYING
Singed- FUCKIGN ANNOYING
Darius- That True DMG
Jayce-Range/Melee, Annoyance

Best Mid's:
Anyone WHy? because everyone who goes mid tends to be Squishy.

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Blind
This is the Number one team that you will surely win, if everyone knows how to play their champs.

Jayce ADC
Shen Jungle
Malphite Top
Morgana Mid
Alistar-Support
Instant Win.

I skipped to the "perfect team" after I read "Sona-Great heals" Ohh my God
Sona gives you extra ad/ap and also harasses giving you this boost
Her heal gives you extra armor and mr (I think for a little amount of time)
Gives you a speed boost that'll help you run away from or chase any enemy champions
And then you miss this all might ult from her??? Her global fucking stun???
Bro you're going to have to get more info on all of the champs in the game if you're going to make a list like this.

And you're perfect team can get owned so hard.
By a team composition of
ADC - Ezreal (his e will counter jayce's melee atks since his ranged damage sucks)
Support - Sona/Blitz (Sona has the heals and harass and stun, blitz has a pull that'll dominate early game and thus dominate late game)
Mid - Kat (counters morgana hard and will render her useless)
Top - Rumble/Vlad (AP will own malphite top pretty much, plus they have aoe-ish ults that'll help from this team composition)
Jungle - Amumu (Bandage toss will give great ganks, e does lots of damage if you max it first, and his ult is an absolute game changer)

With the team composition like this, you just have amumu ult, then kat goes in and ults, then sona ults with Rumble or vlad, Then an Ezreal ult and they're all dead. Plus, if both teams are at the same level of skill, your team would've gotten countered hard early game and they'll melt even faster.

Ragin like a boss

Edit: Just read your "mid champion" section. Ryze, Diana, Morde, Cho, Swain, and Elise not tanky enough for you???