Lorwyn introduced the first five planeswalkers, then the next three sets ( Morningtide , Shadowmoor , and Eventide ) had zero planeswalkers in them
There may not be as many of them, but what they lack in numbers they certainly make up for in power and depth a whopping six mythic rares will be leading the review
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That said, Archmage's Charm is so powerful that control decks likely will find it worthwhile to rebuild their mana to fully power up the instant
It's wise to have a variety because the supply is limited and continually changing
Other decks also have few hand trap monsters, and conversely, opponents often use trap cards like "Infinite Impermanence" and the Dominus series, so I thought "Red Reboot" is worth adopting as it can be used both going first and second (trap cards remaining on the field are easily handled by Trishula)