Meaning, you can't just shortcut it and have to play it out, making 20 minute turns that aren't guaranteed to win
On average, using its activated ability will put half of your deck into the yard, which should be enough to keep you going for the rest of the game
A free counter doesn't elevate a deck to top-tier status on its own, but there's still an expectation with some players that casual decks don't include them
That gives us six decks in my roster, four of which are Boros, which some might say is embarrassing, but I would say is the epitome of doing what you love to get the most out of the format
While now out of rotation for Standard format matches, I feel its safe to say that this set has completely solidified its place in the games history
The mentor trigger compares the power of the involved creatures two times: at the time of the trigger, and as it resolves