yugioh cannot be targeted by card effects rulings The it affects can still used as a cost, right? Yu-Gi-Oh! Wiki - Impenetrable Attack

Instead of jumping, she converts a creature into an Angel, giving it flying and some counters

UR Ultra Rare Altergeist Kunquery X EARTH Level 5 [ SpellcasterEffect ] ATK 0 DEF 2400 When an opponent's monster declares an attack, if you control an "Altergeist" card: You can Special Summon this card from your hand, and if you do, negate that attack

Stormbreath Dragon and Fanatic of Mogis are great at doing this

Once you do, you put it into your hand and it behaves like any other card you've brought into the game

2 Greninja & Zoroark GX (201) While not exclusively a Greninja card, Greninja & Zoroark GX prominently features a chillin Greninja so it counts in our eyes