25th Anniversary Tin: Dueling Mirrors

(This card is always treated as a "Ninjitsu Art" card.)
When a "Ninja" monster you control inflicts battle damage to your opponent: You can target 1 card your opponent controls; destroy it. If this face-up card in its owner's Field Zone has left the field because of an opponent's effect, and is now in the GY or banished: You can target any number of "Ninja" monsters with different names in your GY; Special Summon them in face-down Defense Position.

Tenchi Kaimei

25th Anniversary Tin: Dueling Heroes Mega Pack

If your opponent controls a card: You can Set up to 1 "Ninja" monster, and up to 1 "Ninjitsu Art" Spell/Trap, except "Ninjitsu Art Notebook of Mystery". These cards come from your Deck and/or GY, but only 1 can come from each. If this Set card on the field is sent to the GY: You can target 1 face-up monster on the field; change it to face-down Defense Position. You can only use each effect of "Ninjitsu Art Notebook of Mystery" once per turn.

Ninjitsu Art Notebook of Mystery

Activate this card by targeting 1 "Ninja" monster or 1 face-down Defense Position monster on the field; Tribute it, and if you do, Special Summon 1 "Ninja" monster from your Deck. When this card leaves the field, send that monster to the GY. You can target 1 "Ninjitsu Art" Continuous Spell/Trap in your Spell & Trap Zone; return it to the hand. You can only use 1 "Ninjitsu Art of Dancing Leaves" effect per turn, and only once that turn.

Ninjitsu Art of Dancing Leaves

The equipped monster gains 500 ATK, also it is treated as a "Ninja" monster. You can only use each of the following effects of "Ninjitsu Art Tool - Iron Digger" once per turn. You can banish 1 "Ninja" monster from your GY, then target 1 card on the field; destroy it. If this card is sent from the field to the GY: You can target 1 of your banished "Ninja" monsters; add it to your hand or Special Summon it in face-down Defense Position.

Ninjitsu Art Tool - Iron Digger

Battles of Legend: Crystal Revenge

Special Summon up to 2 Level 4 or lower Insect monsters from your hand (with the same Level, if Summoning 2). If you control "Number 2: Ninja Shadow Mosquito": You can banish this card from your GY, then target face-up monsters your opponent controls up to the number of Insect monsters you control; place 1 Hallucination Counter on each of those monsters. (The effects, if any, of monsters with Hallucination Counters are negated.) You can only use each effect of "Ninjitsu Art of Mosquito Marching" once per turn.

Ninjitsu Art of Mosquito Marching

Shadows in Valhalla

If you control a "Ninjitsu Art" card: Destroy as many other "Ninjitsu Art" cards you control as possible, then draw 2 cards.