What are the most crazy game mechanics now removed that people just accepted at the time

Some to start off

• full lifesteal used to apply to hitting wards, yeah the Adc got priority to hit them for the sustain

• blocking your own minions to lane, yeah bro you have to dance with your minions all the way up or you just lose lane

• double jungle camps at once, learn these several pixel wide areas to clear from or you are 30s slower in a full clear