My opening seven was too slow, and my six was unprepared for a combo deck
However, when Cabaji is used with OP01-086 Overheat, OP03-047 Zeff, and others it can be very hard for the opposing player to keep their characters out at all
(EDIT: Jinzo is better here than a second Mobius is, you won't always draw Decree)
It draws cards at a bit more of an expensive rate than Phyrexian Arena, but it can also create threats and Treasure Tokens to go along with it
The only real evidence I can find for this is that Jin-Gitaxias had a hunch (thats right, were working off a hunch) that Urabrask had some grander idea planned that he hadnt revealed
Electrodominance Targeted removal+ Speaking of free stuff, Electrodominance is an instant spell that costs X and two Red mana