The rest is practice, experience, experimentation, and learning from defeat
You've got fantastic removal with Swords to Plowshares and Mortify , plenty of board wipes with Hour of Reckoning, Fell the Mighty, and Martial Coup , and even some decent lands like Sunken Hollow, Praierie Stream, and Exotic Orchard
This might not be the same card that was exiled with Mimic Vat at the time the ability was activated
Decks that want to draw cards with Fact or Fiction are very unlikely to also be able to optimally use a Skullclamp, decks that have the mana to bust out a five or more mana draw spell are similarly unlikely to also want to use the economic but slow Ancestral Visions
This white enchantment cant save your creatures from removal like instant-speed flicker, but itll blink one of your creatures or artifacts every single turn
Bloodrage Brawler: this card reads like a 'combo with Madness' card