This is where I kinda wanna go for one branch of what this deck could look like. I've already played a few league matches and would cut the grand abolisher as well as the 4th sb stony silence. I feel bad about cutting the stony silence, but I've had them pile up too many times in my hand. I'd also cut the spell queller, it just sits in my hand uncastable most of the time.
The cards I'm using past the core 20 are just an impersonation of a tax package you might find in white eldrazi or shops. All I really want to do is start going crazy with a bazaar or survival as fast as I can while stopping my opponent from going crazier at a faster pace than me. When I lose, the #1 reason is getting FoW'd at the worst possible times and then having no choice but to play draw go until I find more lands that make mana (maybe 3 is too many ESG), or action that can swing me back into the game. I almost want to go back into red to run goblin rabblemaster, a dude that can just take over a game on an unchecked board.
If you're not gonna run a tax package, you can try to run countermagic to try and stall the game to the point where you have flooded the board with VV and hopefully won the game. That list is going to still have that core 20 cards, but past that I can imagine a deck that goes real heavy in blue to support FoW (disputable, but probably 16 cards), or maybe just runs missteps and mindbreak traps.