To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Stormwing Entity)
Even outside of graveyard strategies, cards get removed from play all the time in Commander
In essence, this makes everything you own unblockable in only a couple of turns, and if you want to be attacking, thats really all you need to know
Force of Vigor shows up in top-tier Modern, Legacy, and even Vintage sideboards, and is a staple of competitive Vintage and cEDH decks
Platinum Emperion 4 This and the old Platinum Angel are a different take on the Stormtide Leviathan / Iona lockdown fatty
According to ReptileCake, in a Reddit post wherein he detailed the meeting, Pope Leo laughed, probably as a courtesy, but he did know about Pokmon cards. Even better, the Pope passed it around to his security detail like a kid showing off their prized Pokmon card on the playground