Shadowverse

They made a rather weak map featuring Clarissa... She's an ideal annihilator; it would have been better to give her the effect "on attack, kills any follower enemy, ignoring any effects and card specifics." That would have suited her better.
Although, I suspect that the effect removal ability of Clarissa and Sarunan also removes the active/passive abilities of the cards themselves. If that's the case, then it's still somewhat usable, and it would be convenient against things like Aegis.