Unironically, quite hard actually. Properly playing support you need extensive knowledge about cores you're supporting and predictive skills to estimate how well actual players will implement proper core strategies, then you need to know the same about opponent and incorporate your other support and enemy support moves into all this calculations to triangulate which of the 100s of support moves would be most efficient right now. Playing support is only easy when you are behind and have no networth - then your moves are so limited that it becomes a choice of "can I do something useful?" and do that if the answer yes and do nothing otherwise. pick shadow shaman and chain stun whoever cleaned up the last team fight; pick shadow shaman and chain stun whoever cleaned up the last team fight