Three mana 3/3 is always a good start and a nice little stat bump to your other creatures is very welcome, especially in the go-wide decks
It's ridiculously rare that R&D makes a sizeable mistake (relative to the amount of product they produce), so if they're going to find ways to improve, most of them are going to be tiny
For those of you who will remind us that Black Lotus is banned in Commander, thats fine
Svyelun of Sea and Sky Giving all merfolk ward is pretty sweet, as is being an often-indestructible card drawer
It also doesnt have evasion or trample
By the time you're playing Look at this Family, you're likely later in the game, having thinned your deck out a bit and giving you better odds at getting something you want