Mana leak might be better off as removal instead. Almost everything else in your deck is sorcery speed, so you don't really have a way to capitalize on the untapped mana if you don't need to counter. Could be any targeted removal or more card selection like
preordain.
I could see you losing to
ghostly flicker loops to pull the enchantments off of the land. Heck, they could just
flicker 2 lands and 2-for one and call it a day. Not really sure how you'd beat that unless
rhystic study is going nuts, especially if they run enchantment removal in their sideboard.
How bad is it to play
rhystic study on 3? Is it okay taking a turn off of soft locking to play it?
Let me know what you think! I'm curious what you've experienced in playtesting and this deck looks super cool. I love the
grim guardian,
wind zendikon and
paralyze because they force action, which is your gameplan. Without those, I think people would just tap their lands carelessly anyway, so good choices!