Rite of Passage works particularly well when combined with other Dinosaurs that deal damage like Marauding Raptor, which deals 2 damage to a creature when it enters the battlefield under your control
MirriMirri also plays terrific defense, as when shes tapped, opponents cant attack with more than one creature
Partner (You can have two commanders if both have partner.) Legendary Creature - Human Artificer Phyrexian Kodama of the East Tree Reach Whenever another permanent you control enters, if it wasn't put onto the battlefield with this ability, you may put a permanent card with equal or lesser mana value from your hand onto the battlefield
Therefore, some versions are arbitrarily more expensive than others
This is because it is a purposive card, you can put it in a deck and improve that deck with no prior knowledge of your opponents deck or who is on the play
Double Strike Getting to do damage twice is great if your deck has payoffs for doing so