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Prompto Argentum

And while protection from white is circumstantial, most Commander games will have at least one player with white mana in their deck, so that protection is rarely totally dead

The price you pay for the resulting effects would be very expensive if attached to an instant or sorcery spell, but seeing that they are attached to a creature and can be activated repeatedly and at instant speed, the additional price seems a bit fairer

Now, consider a Blood Hypnotist who says "the first time each turn you sacrifice a Blood token" - in that universe, I probably end up killing you with some really inevitable Grolnok beats

For the worldwide release, Ravensburger has advertised it to be on September 5th