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I found a tidy little org chart on Stack Exchange that outlines the process neatly

If you're playing against particularly aggressive decks that tap all the time, Calamity of Cinders will be of limited use

First appearing in the Limited Edition Alpha set, this spell is iconic for its power form back in Magics early days

Flare of Duplication is neither of those, but the most common use case for this is to sacrifice your creature thats being targeted while creating a copy of the spell to aim at the original casters creature as a gotcha moment

This is a two-person, double-sized playmat intended for stores to do demos with the Gateway box set, for learn-to-play events, or for new players to play on

If you cast Slaying Fire without paying its mana cost somehow, you probably didn't spend at least three red mana to cast it, so the adamant bonus won't apply