Guide is based on LeBlanc of patch v22.214.171.124 on Summoner's Rift.
I like getting Boots of Mobility, If the opponents have no magic defense. So I can move quickly to Gank. To rack up Mejai's stacks.
Generally I think LeBlanc should be played selfishly, kill steal, run away at the first sign of trouble and never help a ganked friend, never try to protect a tower surrounded by four opponents. But I think anyone using Mejai's really would have to play this way. I does mean having competent teammates is important. I have a lot of losing games with 9:0:5 sort of stats because my team was not up to the task.
Morgana is your nemesis avoid her if you can. Her magic shield ruins everything. Ranged snares are also not fun.
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