im not a big fan of sovereign XD i would use ranger of eos if thats still in standard (i dont play standard so i dont keep track of anything :P also auriok champion kor firewalker dont use whitesun's passage it sucks and ur pretty much building a worse version of this deck http://www.youtube.com/watch?v=sXeDXcfLsGQ&feature=feedrec_grec_index
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421.4. If the loop contains only mandatory actions, the game ends in a draw. (See rule 102.6.)
just fyi, if u try that guilty conscience combo it becomes a tie... uncontrolled infinite loops tie games even if you theoretically win