I imagine something more akin to the Juggernaut from Alpha or something
It should be easily predictable what everyones voting for based on the boardstate, and the mind control effect is only taking small creatures
Since you spent the turn cheating an octopus into play, Unagi's Spray can be just the trickery you need to defeat an attacker or trigger a second draw
Basically, its a really good card for people playing both Artifacts and Instants and Sorceries, and thats probably you, so you should use it
The first port of call for a 5c deck of similarly-typed creatures is Morophon, the Boundless, and its discount ability is very effective here
Playtest like a scientist, not like a gambler