I also love this with The Stick (Isochron Scepter), or casting everything from your library with Future Sight
But really, just about any green deck will have big creatures, so this card will be an excellent source of extra mana, and since it has vigilance, you can even attack with it first if you need to
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
Your commander might decide on the common thread of your deck, but it should not be its pinnacle
Flipping Out Champions of Kamigawa prerelease and opened a card that looked something like this: Today I'm going to explain what exactly these cards are and how they came into being