Irreverent Revelers would be a 2-mana creature if its ETB were fixed rather than modal
Which cards you should be choosing is an entirely different story
Note that if you can take your opponent off green mana with Assassins Trophy, that might be worth doing
But the most obvious synergy is with the Argothian Enchantress, which is the most natural choice for this new commander
Ragavan once again has us asking, How much should one Magic card do? and also, with the Ragavan-Bonobo Index, How much should one Magic card cost? The answers are still unclear, but at the very least, Ragavan creates a lot of interesting lines, fits in a variety of decks, and promotes interaction from the start of the game
If another effect sets a creature's power and toughness to specific numbers or values, those become its base power and toughness