If a few years ago you told people that Colossus Hammer was going to be in one of the best Modern decks a lot of players would have scoffed
@GavinVerhey There's plenty of context here to answer this question
Most of them aren't great on their own, but two standouts include Lin Sivvi, Defiant Hero and Cateran Summons
After all, to steal a spell you first have to survive having it cast against you
(Yes, you can play a commander just for the colors, but that is boring and I dont want to talk about a weird Vintage variant where you have a random card dictating what goes into your deck for no reason.) The most notorious commanders are central to the deck for the consistency and synergy they provide
Whenever you cast a spell, if the amount of mana spent to cast that spell is greater than Liberators power, put a +1/+1 counter on Liberator