This card is a counterpart to the Orange Laser added in the big Beta 6.6 Update. Previous Versions can be found here.

As blue attacks mean that you must not move, this card punishes you for doing so, but with attacking instead of moving. This can be useful against low cost Charge cards (mostly in Bravery) such as Temmie and Ice Cap, as they will instantly die if they try to attack. That's because they have 1 HP, but unlike most other abilities, Blue Laser activates before the enemy monsters actually did any damage.

Can also somewhat be helpful when preparing for Asgore.

This can be countered easily with cards like Madjick, Muffet's Pet and silencing cards. This card also pairs well with Orange Laser.

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