The Magic: The Gathering Standard Simic Nature’s Rhythm Ouroboroid list is already doing a lot of powerful things. You’ve got Llanowar Elves to jump ahead on mana, cheap creatures like Badgermole Cub to get on board early, and value engines like Gene Pollinator and Quantum Riddler to keep the cards flowing. Then there’s Ouroboroid, which quietly turns every creature into a scaling threat thanks to the +1/+1 counter synergy. The deck snowballs well, and when it works, it feels like everything just keeps getting bigger every turn until the opponent can’t keep up.