The cards you will likely most want to play on the board, and optimal turn placement:
1.) Nebula if possible
2.) Zabu is best played on turn two, but Morbius is also a great play.
3.) Dracula is preferred. If Dracula is not in hand, and you cannot play Lady Sif, float.
4.) Dracula, Shuri or She-Hulk, your choice. The next turn is dictated by your choice.
5.) If you played Shuri, you'll likely want to now use Modok. This will make your card 16 power and discard your entire hand (hopefully with Apocalypse increasing +4!) If you played She-Hulk/Dracula, you'll now want to use Shuri.
6.) Play what's available. If you only have Apocalypse+ Chavez in your hand, it's generally better to play Chavez to give Apocalypse +4 power via Dracula. There may be times where playing Apocalypse is better, and leaving Chavez for Dracula. If you played Shuri on T5, play your Modok and clear your hand!
Whenever you are able to use Modok, you'll likely have Wolverine in hand. This will give you +4 power on board via placement, and +2 to Morbius