As mentioned, Morg is super safe champion. You basically want to farm with your W, and use Q for harass, but only throw a Q when W is up, that way if you land the Q you can throw the W for added damage. Always max your W in mid lane first. If you're going to ult, land a Q, ult immediately when they're in range, shield yourself and then get as close as possible, but make sure to position yourself that way if they flash away or something you'll be close enough and you should try to have a clear shot at another Q. Build paths vary, but damage, some mana regen, and movement are important early. So
,
are good early pair, but
is a must build third if you don't rush it first. Some people will build the
first, then get tier 1 boots, then rush their zhonyas then finish Morellos and sorc shoes. After that it's kinda up to you.
Lux, super easy to play, a higher damage output, a little more vulnerable, but good range and good cc.