This is an update/comment because I want to know what you all think about this possible change...

So today I played with my friend again who has hundreds of decks built and in one of his decks (an Angel singleton deck) he had Luminarch Ascension . We were discussing some pros and cons to adding this to my deck. What we would remove are all the Mayor of Avabruck  ^Flip 's thus making this a creature-less card deck which focuses on the tokens and Planeswalkers even more. So the debate is what to put in. We thought 3 Luminarch Ascension 's go in and for the fourth card maybe another Midnight Haunting , Spectral Procession , or move the Call of the Conclave in the sideboard into the main deck and add another Oblivion Ring to the sideboard.

Your thoughts/ideas on this would totally be helpful. Thanks.

P.S. I won most of the matches we played today (against 4 different decks) with using my sideboard to try out the effectiveness of it.