NT-D (エヌティーディー; NewType Destroyer) is a keyword introduced in SD54, exclusive to [Unicorn Mode] Spirit cards from the Gundam Unicorn series. The effect is worded as follows:
- Flash - NT-D When either player controls a Spirit with at least two symbols, this Spirit can change places with a refreshed "Destroy Mode"-named Spirit card from your Hand. When you've done so, [additional effects].
Noticeable official Q&A
Q11: Can your Spirit card change places with a Spirit with "NT-D" with a "cannot be returned to hand" effect?
A11: No, it can't.