Hmm.. I recommend to clean up the landbase. My golden rule here: "If it always enter tapped, it needs to have a significant effect". Especially with your budget there is no reason to play stuff like
Rakdos Guildgate. you want to be as fast as possible.
Heroe's Downfall could be replaced with
Bedevil.
Then, what about replacing
Diabolic Tutor with
Demonic Tutor? Since demonic got a reprint, he should fit into your budget.
Since Kalia is only 2/2, it could be useful to make her unblockable with cards like
Prowler's Helm or
Whispersilk Cloak. But this is a little meta dependant.
If you really want to spread salt, add
Master of Cruelties. If you cheat him in with kalia and your opponent can't block, he's out.