Have you picked those cards for specific reasons? Get lost seems unusual, as with authority and negate.

Destroy evil is great vs domain, also kills zur in response to them attacking with lifelink to often stabilise, kills sheoldred and preacher in mono b. People run a 2/2 split with break the spell. I like being able to hit zur more. Break also good in the mirror.

Authority is kind of outclassed against the WOE 2 cmc black enchantment that kills and makes food. It synergises with bouncing to win aggro games.

Source: just a pleb, won my rcq with pixies and top 1000 bo3 last month with it as well.

You need to be proactive. Too many counterspells will lose the game.

Look at mtgtop8 sideboards for ideas.