Protective Soul Ailin

Level 1 LIGHT/Fairy Union Effect
0 ATK / 0 DEF

Once per turn, you can equip this card to an "Indomitable Fighter Lei Lei" you control, OR unequip it to Special Summon this card in face-up Attack Position. When equipped to a monster by this card's effect, you can change that monster's battle position once per turn. (A monster can only be equipped with 1 Union Monster at a time. If the equipped monster would be destroyed by battle, destroy this card instead.)

Rulings – Yugipedia

Printings:

Cybernetic Revolution: CRV-EN024 (Common) - 2005-08-17
Dark Revelation Volume 4: DR04-EN024 (Common) - 2007-11-14

Prices:

Cardmarket: 0.47 €
TCGplayer: $ 0.11