Lion's Eye Diamond
{0}
Artifact
Oracle Text
Discard your hand, Sacrifice this artifact: Add three mana of any one color. Activate only as an instant.
Watch Out
Mana abilities don't use the stackRules Note
If this card's activated ability produces mana and doesn't target, it's a mana ability. Mana abilities resolve immediately without using the stack — opponents can't respond to them. However, abilities that target (even if they produce mana) aren't mana abilities.