Looking to pick up Universes Beyond Assassin's Creed
(Note that for purposes of understanding the history of the +1/+1 counter, I have to also examine other power/toughness altering counters): What else did these four creatures have in common
And to give you an idea of how critical he was to the team, when we were getting new desks and I was asked about any requirements for where my new desk would be, one of my requirements was "I need to sit next to Hindy." Hindy, along with Andrew Brown and Jadine Klomparens, did a fantastic job figuring out what this set would mean for Standard and worked with the whole Play Design team to put it through its paces
He doubles the number of cards your opponents need to mill, letting you quite easily synergise into a one-turn mill win when used with cards like Peer into the Abyss and Teferi's Ageless Insight
There also won't be any honorable mentions (just a secret best #1, spoiler alert), if it doesn't cut it in the top 20, it's not good enough for me
