Yeah there where none indeed the 2 drops propossed before where (grimoire thief, rootwater thief and inkfathom infiltrator). I didn't brought that up qq or something i just wanted to point out that a good 2 curve is what the merfs creature base really needs to fill the gap.
With commander in the scene it might get the aggro clock of the merfs abit faster and like what the above posters had stated would most likely eat removals. He is a vanilla early on, mid game could block flyers or flyer over the defenses and late game could bolster your troops and a decent 4/4 body aswell.

