First ever edh deck!! :O

DISCLAIMER: this is for the kitchen table, my only wish for this deck is to make it coherent and playable, please don't bring your "only play for the win" mentalities here.

I'm going for a more control-y kind of build here with Basandra, Battle Seraph. She stops all forms of combat tricks and she acts as pseudo-spot removal by forcing my opponents creatures into attacking while I have the creatures to block and kill theirs.I also have a lifegain and tokens sub theme if you didn't catch on. My main issue is working with the mana curve, I have no clue how it works in EDH, do I not want spells that have low cost? idk, just help me out however best you can :)