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Magus of the Wheel sees play in the wheels EDH archetype where you need to discard and draw very frequently to turn on synergies, be it discard, draw, reanimator or madness
In addition, it theoretically puts in work against any sort of low-HP basics, including Joltik and Combee
Well, Search is a useful card just because it exists, so it will become even more powerful depending on future Spell/Trap cards named "Synchro"
You can also use these spells after going to attacks to trigger prowess on your attacking creatures, making them grow to a size that the opponent's blockers weren't expecting
The copies wont be able to make mana on their first turn, but when it gets back to you youll be in a damn fine position