Earthquake is an unobtainable legendarycard currently used exclusively by Gonaku and Warpkin. It was also used by Travoltron in the RPO boss fight.
It costs 4 bits and deals 40 damage to every enemy on the battlefield. It is a very devastating card to large teams, due to it damaging every member in the party.
It previously also damaged teammates, but this was changed on April 30th 2021, to make it only affect enemies.
Currently, it is unknown how many people have this card. Although it is known that certain staff members own this card (They sometimes let their trusted friends borrow this card, under the rule that they are not allowed to trade it away).
Bitsquid has previously stated they don't intend to give it to more people, citing its inherent teamkilling nature. Although this has changed, there is still very little chance it will become obtainable.
Trivia
Prior to the 30th April 2021, Earthquake used to damage allies too.
Unobtainable
Note
Cards in Italics are confirmed to be NPC only or not added to the game. These cards or outfits are used by NPC troops, meaning that they are not obtainable for the player and may never be.