There are a few directions to go with this deck
Shiko can bring most of your important ones back out, so it's better to counter spells that will advance your opponents' board states rather than saving your own
Future use of the amass mechanic should specify a creature type, which we saw on the one-off Lazotep Sliver with amass slivers
This deck is looking to use Cordial Vampire as an Overrun effect, sacrificing tokens and maybe a blocked Vampire to make your other Vampires huge, which makes me wonder if the deck is maybe short a sacrifice outlet, but I think you have enough looting effects to find one most of the time that you need it
At that point in the story, the protagonist feels disoriented after learning Sin might be his missing father, and Inspiring Call captures his resolve to mask confusion with cheer, making it one of the sets finest nods
Cards like Jedit Ojanen, Lady Orca and Sivitri Scarzam have never been good