(2/18/2022) Although the Ninja is attacking, it was never declared as an attacking creature (for purposes of abilities that trigger whenever a creature attacks, for example)
If Hostage Taker dies then you can do it again next turn
It would be something if said creature was actually useful in some way, because perchance you can now have 12 copies of the same card instead of 4 copies
It can tap for a black, or simply dredge for two if it got milled
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