best champion for low elo

Aside from a mistake from the Nasus player themselves. Teamwork is required to beat this champion. Teamwork mostly between the Top laner and the Jungler.

Even if you counter-pick a Nasus, there is some level of skill required to play champions such as to kite Nasus. Honestly, I don't know another good counter-pick against Nasus right now. Any other counter-picks?

Amumu. Tanky, does a lot of damage, CC, great teamfighting, great for picks, easy to learn.

Just pick yi Jung, farm till like level 9 and just split for the win. Litterally can win every low elo game this way.

Etc.

Annie is actually stupidly good in any ELO. She's just boring as hell to play.