For two green mana, you’re getting a 3/3 creature. That’s it. No effect or anything. However, this is what makes this card so powerful.
Generally speaking, a creature should pass the “Vanilla Test” if you want to consider them for your deck. In this case, Kalonian Tusker passes this particular test with flying colors. A creature should usually get 1/1 stats for each converted mana cost value, give or take a point here and there based on any and all card effects.
You ask yourself stuff like, “Is this card good for its cost?” Or, “Are there better cards I could substitute in for the deck slot?”
Because Kalonian Tusker actually has 1/1 more worth of stats for his converted mana cost, this makes it a real bargain in terms of power. To put a 3/3 creature out on turn two just like that is quite substantial in Magic. As a result, Kalonian Tusker is an excellent card for “beatdown” strategies.
Honestly, my only real gripe with this card is I don’t really like the artwork that much. Otherwise, you can bet a play set of Kalonian Tuskers is on the agenda for just about any green player.