The other two are level abilities , one activated ability to advance the Class to level 2 and another to advance the Class to level 3
Perhaps to the point where someone felt it'd be a good investment to pay over $100,000 for one, although it seems doubtful this particular Mox Jet will ever be removed from its protective case
If you have them, consider adding any of these cards in place of some of the less-efficient dual lands or even basic Swamps or Plains: Shadowy Backstreet, Concealed Courtyard, Isolated Chapel, Brightclimb Pathway/Grimclimb Pathway, Godless Shrine
The deck produces tons of mana you can feed into X spells like Torment of Hailfire and Genesis Wave, or you can take the classic route of jamming Eldrazi titans
MH2 is a very enjoyable Draft experience with compelling archetypes, lots of options in Draft, strong balance between aggro and control, and interesting gameplay with lots of room for skilled players to win games
Thats especially handy with all the disruptive creatures they play, like Merfolk Trickster and Tishana's Tidebinder