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Journey to Nowhere also slows down Delver and Maverick decks

Disregarding Graveyard effects from certain archetypes Burning Abyss, Eldlich, and Unchained are Decks that can easily bounce back from field wipes the opponent might make a comeback if they topdeck a combo starter

You need True Card Randomization

If the equipped monster destroys an opponent's monster by battle and sends it to the GY: Draw 1 card

Falling Star incentivizes players to physically spread their cards out over a large area in order to minimize the possibility of multiple permanents being affected

Other than that, no comment until I get a better feel for your "Sky Pegasus" archetype