Lucas is so kawaii :3
Back to the point, Lucas has a very fast and a misleading Ftilt, it's pretty good since it has little ending lag and the range is not that bad.
Dtilt is a great way to split the ICs, it can also lead into a Fsmash, one powerful Smash for a character as the likes of Lucas.
Lucas can split the ICs, his Nair is a very good move, it's a fast multihitting attack and has little or no ending lag when properly timed. It's very very hard and so it should be watched for.
PK fire is canceled out my Ice Blocks, so you won't have to worry about it that much, but it's a great spacing tool for Lucas.
Gimping Lucas is easy when he is under the stage, make sure you make our Ice Block hits his PK Thunder and he falls to his doom.
His Dair should be watched, it's a good tool when he full hops it.
We have that ability to beat him on the ground, he's tough in the air, but I think we have a hint of priority on our side.
I really want to but it our advantage but I like Lucas so much, I'll put it a 50:50 just to be nice xD