Ninjitsu Art of Super-Transformation

Target 1 face-up ôNinjaö monster you control and 1 face-up monster your opponent controls; send them to the Graveyard, then Special Summon to your side of the field 1 Dragon, Dinosaur, or Sea Serpent-Type monster from your Deck whose Level is less than or equal to the combined Levels of the sent monster(s). When this card leaves the field, banish that monster.