Thorn of Amethyst
Artifact
Noncreature spells cost 
more to cast.
"The geode must be mined in moonlight and broken open by a silver hammer." —*Tome of Obstructions*
Commander bracket
1
+
Fits any bracket
No Game Changer, land denial, extra turns or two-card combos.
Derived from card traits, not a ruling — bracket rules turn on how a deck intends to use a card. Bracket rules
EDHREC
Salt Score
1.06
How much players resent seeing this card. The scale tops out around 3.1.
Combos
Not part of any combo on Commander Spellbook.
Format legality
Standard
Not legal
Pioneer
Not legal
Modern
Legal
Legacy
Legal
Vintage
Restricted
Pauper
Not legal
Commander
Legal
Oathbreaker
Legal
Duel Commander
Legal
Brawl
Legal
Standard Brawl
Not legal
Historic
Legal
Timeless
Legal
Alchemy
Not legal
Penny
Legal
Premodern
Not legal
PreDH
Legal
Pauper EDH
Not legal
Old School
Not legal
Future
Not legal
Gladiator
Legal