Persona Blast (ペルソナブラスト Perusona Burasuto) is an official term which refers to the cost of discarding a card from your hand with the same card name as the unit possessing it. It was introduced in Booster Set 5: Awakening of Twin Blades in the Japanese/Korean format, and in Booster Set 6: Breaker of Limits in the English format.
A Persona Blast can be viewed as a flexible and relatively easy to achieve powerful ability. The very specific cost tends to make Persona Blast rather luck reliant and restrictive, but this can be mitigated by increasing units in your deck that can draw along with draw triggers. In addition, some units with Persona Blasts ("Covert Demonic Dragon, Mandala Lord" and "Beast Deity, Azure Dragon") have other units dedicated to searching their copies, and "Fate Healer, Ergodiel" can use its clan's mechanic of swapping cards out of the damage zone to retrieve copies lost to damage checks.
As an added advantage, you can make certain moves as a bluff if the opponent doesn't know whether or not you have the required copy of the card in hand. For example attacking with all your units before you attack with your vanguard "Beast Deity, Azure Dragon" signals to your opponent that you could have an extra copy in your hand, making them think twice about their guarding.
- G Booster Set 1: Generation Stride introduces a variant exclusive for G units called "G Persona Blast".
- G Booster Set 13: Ultimate Stride introduces a variant to bring out a very powerful G unit called "Ultimate Stride".
Persona Blast is treated as a keyword, in order to reduce the somewhat long description so it can better fit on mobile device screens.