Ninjutsu is an ability that can be used at any point while a creature is considering attacking, and that includes after damage has been dealt and triggers have been put on the stack
While they werent playable and did not provide any benefits to players, you could display them as decoration
If this card is targeted by the effect of De-Fusion, the activated effect becomes Shuffle the target into the Deck, and if you do, gain LP equal to the ATK it had on the field, then you can Special Summon 1 The Winged Dragon of Ra from your Deck. The second ability of Ra is its Point-to-Point Transfer Mode aka Fusion Mode
Given that deathtouch is free, and lifegain on draw is free, we only have to check the cost for two damage per card drawn for opponents
I tend to play the slower power levels our format offers, both on our own platform and in my local game store, and while good tutors arent banned in those environments, you will hear the table collectively groan or mumble when a best in slot tutor gets cast
For ages 0-5 and their caregivers