An easy swap for your budget is Wheel of Misfortune for Wheel of Fortune
Grishnkh, Brash Instigator If you build your deck around amassing orcs, Grishnkh, Brash Instigator could potentially be used for a very impactful turn when you steal a powerful creature
In 1v1 formats, theres too much of a risk that its just useless if you win the die-roll, and its usually not impactful enough to warrant a sideboard slot
Also, imagine trying to attack an opponent with six mana up, a bunch of cards in hand, and three payoffs in playitd like be paralyzing, and your opponent could just keep making land drops while building up an even better defense you cant see
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508.1a The top half of a flip card contains the card's normal name, text box, type line, power, and toughness