Kurisarimon BT22-057-C

Effect: [When Digivolving] If you have 1 or fewer Tamers, you may play 1 [Arata Sanada] from your hand without paying the cost.

Inherited Effect: [All Turns] [Once Per Turn] When this Digimon with [Diaboromon] in its text would leave the battle area, by deleting 1 of your other [Diaboromon], it doesn’t leave.