An excellent strat to put you a level above the enemy team with two buffs is to clear the jungle at level 1.

Use a team comp of a jungler with smite, Nunu, and whatever last pick you want.

Go top to the first camp and have nunu tank and consume.

At the next buff camp smite it and clear it. Then clear the third one normally. You only want the first 3 camps.

Your team will be level 2 while the enemy team won't, and you'll probably have at least one wraith buff which will help you a lot when you force a fight right after.

Gank the top lane, the only way they can escape is flashing through the wall where the two people bottom will come to help him.

With buffs and level two you can't lose the fight, and if you have your jungler buy a long sword first you should have enough money for madreds and you can get drag extremely fast with nunu and a madreds jungler.

Eh, that works only for unskilled players, they'll be lvl 2 in lane, once you go back to lane.

Eh sometimes they dont lane if they're scared of getting ganked.

this is bad stragety running nunu is terrible, your better off getting in your lanes and just warding the enemy jungles buff for a gank

Even if the enemy team is level 2, having a strong team like ww, morg, nunu with two buffs is still gonna win.a team fight. In the gank for top, they have to blow a flash or else they're dead, so they're down one summoner. If they're hit by a cc like morg's snare or sion or taric's stun, they're dead. Also, even if you fail it screws over the enemy jungler. It probably won't work at plat elo but it's worked for me.

Also, could you post any unique strats or team synergies that have worked well for you, instead of just saying "hur dur this guy bad hur dur"

It is viable! But if there jungle gets golem it wont really affect them due to being lvl two and allowing to gank a lane but if they get wraiths it really stumps them.