card lock rfid sleeves Blocking Holder - Credit and Identity Card Protector for Theft Protection Identity Stronghold started the RFID protection industry in 2006 1-50pcs RFID Card Sleeve Wallet

Albaz is also fine

Multiple other people proof read the stuff before it goes to the print facility

Five buttons on the side of the Disk are used to control LP

You can also team up to kill an attacker with a bigger butt by multiple blocking

This somewhat bypasses the high cost, as it will always be available to summon to the field when theres enough mana to call it

For example, Nail put himself to five penalties when he fought Yuga as otherwise it wouldn't mean anything if he won with nothing on the line, in the same token Asana waited for a rematch against Yuga until he got his hands on another Maximum Monster wanting a fair fight