mtg serialized card prices PSA 10 EDGAR MARKOV Innistrad Remastered 491/500 Magic SERIAL Are the serialized cards worth

The Courts Monarch is a mechanic that doesnt exist in a game of Commander until someone plays a card that introduces it

If that cards converted mana cost is less than or equal to the number of experience counters you have, return it to the battlefield

So, for example, protection from white does not stop [c]Wrath of God[/c]

I'd encourage you to check out The Booster Fun of Modern Horizons 2 interview with the Creative team, which does a great job of showing off and talking about all of the cool treatments within the set

Many players buy boosters for the enjoyment and then fill specific gaps in their decks with singles afterward