“The ability to look at a problem, formulate a solution and refine it until it’s as good as it can possibly get is a skill that’s valued by corporations and professionals the world over. Being able to consider situations in which an idea might fail and act accordingly, and possessing the tenacity to attack the problem from a new angle if it does… There are people who pay thousands of dollars to learn these kinds of skills- and I learned them from a card game that’s played by children as young as six.”

Source: A good read. So, what did MTG teach you?

Players do not get priority during the untap step. Spells/Abilities must be used at the beginning of upkeep or before the draw step.

502.3. No player receives priority during the untap step, so no spells can be cast or resolve and no abilities can be activated or resolve. Any ability that triggers during this step will be held until the next time a player would receive priority, which is usually during the upkeep step.