Elizabeth I dies and James VI of Scotland accedes to the English throne. Elizabeth I died childless so was succeeded by her cousin, James VI of Scotland, who henceforth assumed the title of James I of England as well.
T minus zero means out of time.. This comes from a countdown convention used in by both the American military and NASA. Generally, it is used when counting down to a major event that will happen at a specific time. Mathematically, T is time, minus whatever amount of time is left until the event happens.
And actually, saying that you ability is on cooldown means that is locked and you are waiting for the cooldown to wear off. So if I say something like my Ambush is on cooldown, means I am waiting X number of seconds before it will pops again and I can use it.