In the current meta, add Destiny HERO - Denier. He is the best extender the HERO decks has and will help extend your plays going 1st for a follow-up next turn summoning Elemental HERO Grandmerge, the deck's ace.
In this deck, we don't use Elemental HERO Liquid Soldier's effect to summon from the grave, but rather fuse him to further dig in the deck. So, make sure to use Destiny HERO - Malicious' effect to summon it from the grave before fusing with Liquid Soldier. You don't want to draw the second copy.
https://youtu.be/_YkPHGcW-48