Consider Arthur Novice Sparrow, who can deal with early-game threats or be used for your Sing Together songs to bypass his Reckless
Bloodletter of Aclazotz One of the more recent Vampires printed, Bloodletter of Aclazotz offers a ton for just four mana
If the copied creature is a token, the token that's created copies the original characteristics of that token as stated by the effect that created that token, with the stated exception
But this one doesnt seem particularly innovative or powerful, and well forget about it when the next set drops in two weeks
Creatures like Papalymo Totolymo, Emet-Selch of the Third Seat, Lyse Hext, and partners Alisaie Leveilleur and Alphinaud Leveilleur all naturally play into Y'shtola's strategy
If that creature is legendary, draw a card