how to tell if a mtg card is mythic 25 Random Rare Cards Foils/Mythics/Planeswalkers : Toys & Games The Magical History of Mythic

You could also decide to simply play something like Mox Opal as your Precious to consistently have fast mana starts

2 - Electro, Assaulting Battery Another mono Red option, Electro, Assaulting Battery could be ideal for spellslinger decks since it stores red mana, then adds red mana as you play instants and sorceries

I think the abilities should be as follows

In a constructed deck a deck you build ahead of time the minimum number of cards is 60 (with no upper limit)

The Monarch mechanic can be deceptive at times, and fights to wrestle control over the crown are likely to ensue, so new players should be wary of when to be defensive and offer value trades and when to full-send their board state to threaten lethal on another player