As for Rishkar's Expertise and Return of the Wildspeaker, they don't have this requirement, so they are a bit safer
I have included some of the best Initiative cards in my cube (best is rather subjective, and there are a couple of others, that can be equally great), and every time I have now drafted it, at least one person in the pod is surprised about the stupid powerlevel of these creatures at some point throughout the evening
Top 5 Blue Common/Uncommons Prologue to Phyresis: Two mana to infect each opponent and draw a card
Note a couple of things here
Flipping Clive gets you a 9/9 that fights a creature right away, for example, while flipping Sephiroth gets you a Blood Artist Emblem
With a Strength and Willpower of four, Madame Medusa holds her own and can be used to control the board