Milling 42 cards? No problem!

When I mill I much prefer as many ways to go late game as possible. Hence the removal, counters, and card draw. With that along side mill spells and creatures that make attacking not so profitable and/or ones that help mill, this is deck very well poised to go long game. Topping it off with a couple spells that given the right circumstance can gain a decent amount of life.

And I like Merieke as the leader (opposed to the other u/b/x options) because unlike the others, she actually helps me get to the long game and she'll eat removal so my other more important creatures can live. Plus she opens me up to more removal in white.

And any ideas on the sideboard?