Diamond Knight
{3}Artifact Creature — Knight1/1
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Vigilance (Attacking doesn't cause this creature to tap.)
As this creature enters, choose a color.
Whenever you cast a spell of the chosen color, put a +1/+1 counter on this creature.
Keyword reminders
Vigilance. Attacking doesn't cause this creature to tap. · CR 702.20
Official rulings
- You must choose one of the five colors of Magic as Diamond Knight asks you to choose a color. You can’t choose “artifact,” “colorless,” or “chartreuse.” (2019-07-12)
- Diamond Knight’s ability resolves before the spell that caused it to trigger. It resolves even if that spell is countered. (2019-07-12)
- If you somehow control a Diamond Knight for which no color was chosen, its last ability will never trigger. (2019-07-12)
Cards like this
Functionally similar cards by meaning — playable in Diamond Knight’s colours.
