For example, in Urza's Destiny (the set where I was the entire design team), there were two different cycles that explored effects that scaled based on how many cards of a certain color were in your hand
The looting pushes this card over the top
And most of all, I love my turn one play not dying to Orcish Bowmasters or Lava Dart
Number One Chatterfang, Squirrel General is a much-loved commander from the famous (or infamous depending on your point of view) Modern Horizons 2
The best payoffs are generally ones that care about big creatures like Garruk's Uprising, Goreclaw, Terror of Qal Sisma, and Fanatic of Rhonas that make use of how big greens creatures often are
And of course there are plenty of rats, since that's a Wilds of Eldraine draft archetype