This article is obsolete with advent of subticks.
Catching tics is an effective way for grouped spellcasters like mages and clerics to somewhat alleviate mana shortages during runs--a problem that especially afflicts low-hero spellcasters. This technique involves sleeping periodically just as a fight begins and then waking either just after a tic has passed or just before one's group moves (often cued by receiving experience points). By being asleep when a tic occurs, sleeping spellcasters will regenerate a small amount of mana to use. This technique may be dangerous in some areas like Shadow Keep where aggressive-wimpy mobs will attack sleeping characters.
It is highly recommended to put the time in your prompt to help you catch tics. They occur on average every 30 seconds. This is equivalent to 6 rounds of combat.