Troemll, Seymours Butler gives you counters on your team, but where were all pumped is in the tap ability to Proliferate X times, which is kinda insane
As Preston Poulter figured out in the elimination rounds right before he knocked Justice out, you killed Howling Mine, and the deck no longer flowed properly
The Tower is a commonly played land in Commander that removes your max hand size while also tapping for a mana and not arriving to the battlefield tapped
He's got lifelink and then menace for evasion too, very strong and on curve too
Cards that place counters in small increments (like adapt, bolster, or Modular creatures) become dramatically more threatening when paired with The Earth Crystal
These are highly situational as they also affect our opponents, but there should be times where these cards will allow us to recover from a boardwipe, dump a bunch of Zombie Lords and Surveil dorks onto the field and rebuild faster than our opponents