Onderzeeboot
Ecstatic Orb
I don't like 3/4's for 3 in general, but yes, I particularly don't like those with an easy mana cost (which also kinda is). That 4th toughness makes it just so resilient, and the 3 power means it slaughters everything cheaper. The only 3 mv 3/4 I run in my own cube is Feather, the Redeemed, and she has a really unique ability plus she has three colored pips in the casting cost. I also really, really dislike the vigilance on both Sentinel of the Nameless City and Cemetery Prowler. That's really not the keyword I want to see on overstatted cheap minions.Is the splashability that huge a concern for you?
has been fine, not overpowered.
Edit: Please keep in mind that, unlike you, I don't run removal like Swords to Plowshares and Flame Slash. A 3/4 for 3 is decidedly less backbreaking when your removal keeps pace with the higher power curve.