Comet is trash and does not affect the mid or lategame, So, comet at the end of any game does around 2000-3000 damage, I do overall like 40k per game, i dont care for 3k damage to be honest, all i need gold as a suport, first strike goes from 500 minimum to 1600 max latgame gold and damage, i dont care about damage (on runes) as no runes are the main source of damage but around 5% of the total wich is minimal, 1600g(first strike + 300g(free boots) + 150-300g(market) + 550g (treasure hunter) a hole item wich makes you scale so fast you are literaly at the same powerlevel as the enemy midlaner and you carry SOOO HARD early its crazy, you can also take cookie if you cant manage mana well, approach velocity is underestimated, its pretty op in teamfight you zoom around people, and the other 2 alternatives are very low impact compared