Even normal printings have broken $1.50, and Reverse Holo printings are over $3players always want to ensure they dont miss out on their one Supporter per turn
There are a number of resources out there that allow you to plug in your decklist and get a breakdown of what percentage of your cards need specific colors of mana, what the average converted mana cost of your cards is, and other helpful information (Im partial to Tapped Out personally)
On the flipside, for decks with a less doing-damage-each-turn oriented approach, you can have things like Plaguecrafter, Fate Unraveler, or even Sheoldred, the Apocalypse as ways to force sacrifices, or punish drawing cards
Important details: Players are eligible to receive the four MTG Arena cards at a sanctioned WPN event: The Lost Caverns of Ixalan Commander Party from December 1517, 2023