Hey, found this from your reddit post.

I'm working on my own version of this deck, which is fairly similair, and while I haven't made it to experiment yet, I have found some theoretically excellent cards I have found missing so thought I'd share with you.

Hypnotic Siren So, Turn 1: Hypnotic Siren. Turn 2: Attack, Ninjutsu out Yuriko. Turn 3: Plenty of viable options for turn 3 players, but in this case, we want to ramp. Sol Ring into Signet is enough, 2 mana to do whatever, but keep Hypnotic Siren. Turn 4: 4 land + Sol Ring + Signet is 7 mana, bestow Hypnotic Siren onto Yuriko for evasion. If she's answered you have your Hypnotic Siren on the board again.

Ratcatcher This is certainly better for my version, since I put in some Rogue Prowl cards, but even without that, he lets you tutor for Throat Slitter and Ink-Eyes, and cmc 6 isn't bad for a yuriko trigger either.

Liliana Vess This is a pretty good way to mainuplate the top of your deck with that -2.