leblance isnt that great of a champ shes like shaco good for early game terrible late/teamfights. had a game against a leblance and a shaco 75 to 45 by mid game then at the end i think we caught up pretty evenly in kills and won easyly

Alright, one problem i have faced is when going against a soraka or even chogath, when i land my combo, they land a silence and forces me to not be able to use w to go back where i dashed in. Would a lategame banshees veil be as effective as the warmogs/GA strat?

Your best strategy is not to stand in range of chogath... and soraka you have more range than her so gib her first is my suggestion.