i need help with a block 3 deck i have no idea what to play i was thinking of playing aggro but having no experience playing aggro as i am a control player and play mill primarily so it would really help if someone could give me some help building a aggro deck.

The trick to building a viable Aggro deck is designing it so it's kill turn is consistently T2, latest. Obviously, this is difficult to do, but what has made Promo Talim such a threat recently.

Consider 6-check Felicia that drops Feline Spike T1. That would be 4.Felicia, btw.

3.Hanzo with Fei Long's Forward Kick can be Aggro, although you build him with an Evil Control Foundation base around him. I've been T2'd with this character before; not fun.

I'm sure there are other characters and tactics to consider, but these two are what come immediately to mind.