While its an easy sideboard card, Id love to use it in the maindeck of some kind of mono-green creature deck
This could leave your opponents with a tough choice between a color-fixing mana rock and their only blocking creature
The big upside is that this mana can very easily turn into infinite combat loops when you pair it with effects like Aggravated Assault, which makes firebending a natural bridge into infinite combat combos if you want to raise the decks ceiling
Jalum Grifter is a hairy, shirtless man with a hat that's telling that other dude to pick a card, any card, and you can totally tell that he is not an honest man
Shutting off your opponents' activated abilities can be absolutely devastating against some decks, and then getting to use those abilities yourself is even better
While I havent seen Winota, Joiner of Forces at cEDH tables as much recently as in her heyday, theres no question that she can benefit from a card like High Noon