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Diamond Lion
RareMV 2
Artifact Creature — Cat
, Discard your hand, Sacrifice this creature: Add three mana of any one color. Activate only as an instant.
2 / 2
Card capabilities
Derived deterministically from card types, Oracle text and keywords. Not a strategic evaluation.
Format legality
Primary formats
Eternal formats
Digital formats
Other printings
4 other English printingsEarliest 2021-05-06Newest 2021-06-18Cheapest priced $0.25 in MH2
Rulings (2)
wotc18 Jun 2021
You 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.
wotc18 Jun 2021
Even 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.
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