Sorcerer Class

Copying a spell won't cause Sorcerer Class's level 3 ability to trigger and won't be counted toward the number of spells you've cast during the turn. However, if an effect copies a card and you cast the copy, that will count for both of those things.

You can't activate the first level ability of a Class unless that Class is level 1. Similarly, you can't activate the second level ability of a Class unless that Class is level 2.

If the spell that causes the last ability to trigger is countered or is otherwise no longer on the stack as the ability resolves, it will still deal damage. Last known information will be used to do determine the effects of that damage. For example, if the spell has lifelink, you will still gain life when it deals damage, even if the spell was countered.

Gaining a level won't remove abilities that a Class had at a previous level.

Each Class starts with only the first of three class abilities. As the first level ability resolves, the Class becomes level 2 and gains the second class ability. As the second level ability resolves, the Class becomes level 3 and gains the third class ability.

Some Class cards have an effect that increases when more are under your control. For example, if you have multiple Barbarian Class cards, you roll that many additional dice and ignore that many of the lowest rolls.