charmeleon pokemon card full art - 005/165 - Pokemon 151 - Reverse Foil [R] Combustion (20) Attack 2 Charmeleon Cards | Dex -

This triggers creaturefall because the card left the battlefield and returned as Ifrit, Warden of Inferno, which is also a creature

(2022-02-18) An Equipment creature can never become attached to itself

As does Ulrich of the Krallenhorde

Exploit means When this creature enters, you may sacrifice a creature. 702.110b: A creature with exploit exploits a creature when the controller of the exploit ability sacrifices a creature as that ability resolves.

Blue creature decks often desire equipment to give their weaker guys a bit more presence on the board and Kira has poor synergy with them which is critical in deck building