Ninjitsu Art of Transformation

Edison Card Text
Activate this card by Tributing 1 face-up monster on your side of the field that includes "Ninja" in its card name. Special Summon 1 Beast -Type, Winged Beast -Type, or Insect-Type monster with a Level equal to or less than the Level of the Tributed card + 3 from your hand or Deck to your side of the field. When this card is removed from your side of the field, destroy the monster.
Dark Revelation Volume 2 • 2005-10-20
Targets
Note: continuously only after the monster is Summoned
No Damage Step effect
Banlist • Unlimited
Interactions
After an attack is declared and a Dimensional Prison/Solemn Judgment chain resolves, can I still activate Ninjitsu Art of Transformation?!
The Battle Step continues after a chain resolves on attack declaration.
Yes. You remain in the Battle Step until both players agree to move to the Damage Step, so you can activate another legal card like Ninjitsu Art of Transformation.
Rulings
edisonformat.net
●Ninjitsu Art of Transformation does not target; you select the monster to Special Summon when you resolve its effect.
●If The Legendary Ocean is active, your WATER monsters in your hand are lowered by 1 level so if you Special Summon from your hand using Ninjitsu Art of Transformation, you can Summon at 1 level lower (effectively making it Level +4 if looking at the original Level).
●The selected card means the Tributed card.
edisonformat.com
"Ninjitsu Art of Transformation" does not target; you select the monster to Special Summon when you resolve its effect.
If "The Legendary Ocean" is active, your WATER monsters in your hand are lowered by 1 level so if you Special Summon from your hand using "Ninjitsu Art of Transformation", you can Summon at 1 level lower (effectively making it Level +4 if looking at the original Level).
"The selected card" means the Tributed card.