Because opponents can always choose to pass Kharn back and forth between each other, its only correct to damage him if you can get that player to agree to pass it to you first
This policy, established in 1996, created a "hard cap" on supply
You can use only the affected player's resources (cards, mana, and so on) to pay costs for that player
With that out of the way, lets take a look at our predictions for the best new Outlaws of Thunder Junction cards from the main set
Yenna, Redtooth Regent Yenna, Redtooth Regent can generate a lot of constellation triggers for things like Archon of Sun's Grace and can ramp pretty nicely with cards like Wild Growth, but is that better than running a more efficient Selesnya commander with a card draw ability