MHERO users! I need some guidance!

Decided to go HEROs because they are straightforward. I bought 3 HERO Strike structure decks, along with all the monsters needed (Extra Deck too). So Goblindbergh, Acid, Anki, Castel, 101, etc

The main idea of the deck is to summon Dark Law and get Rank 4s like nobody's business. 

Now, like I said, I just started. And so far these are the combos/techs I know.

-Shadow Mist can be SS by Goblindbergh/Summoner Monk, getting a Change card. Set the Change, summon Law on opp turn, get Shadow Mist second effect. 

-Can get an XYZ from above instead if needed. 

-Shadow Mist can be used as overlay material to get her a HERO. 

-Set all Spells/Traps, can SS Bubbleman. 

-Top decking with A Hero Lives. Get Bubbleman, draw two cards.

That's what I know. What kind of combos/techs can I do with the Extra Deck/other spells/traps? Thanks for sharing!