ARTIFACT CREATURE — CAT
Diamond Lion
, Discard your hand, Sacrifice this creature: Add three mana of any one color. Activate only as an instant.
FORMATS
CommanderLEGAL
Brawl (Historic)NOT LEGAL
DraftNOT LEGAL
StandardNOT LEGAL
ModernLEGAL
PioneerNOT LEGAL
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- WWizards of the Coast2021-06-18Official RulingYou can't cast an instant (or activate an ability as an instant) while casting a spell. Therefore, much like Lion's Eye Diamond, you can't activate the ability intending to use the mana to cast a spell from your hand.
- WWizards of the Coast2021-06-18Official RulingEven though you can only activate this as an instant, it is still a mana ability. It doesn't use the stack and cannot be responded to.
Rulings via Scryfall
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