This ability costs less to activate for each legendary creature you control
See why this is my penultimate card
Miles Morales/Ultimate Spider-Man (Borderless) This version of Miles Morales is currently fetching close to $65, which is pretty spenny, but much less than it was demanding closer to release when it was sitting at $150 or more
But, as a 4/4, it isn't likely do die, and you get a free token just for casting it, so at least it can pay for itself
It is also an expensive way on mana, not just cards, to try and control a game
If Custodi Squire is not on the battlefield when its ability resolves, the vote will still take place and the card(s) that had the most votes will still be returned to your hand