Myotismon EX1-061
Effect: [Your Turn] When this Digimon would digivolve into a Digimon card with [Myotismon] in its name from your hand, reduce the memory cost of the digivolution by 1.
Inherited Effect: [Your Turn] While this Digimon has [Myotismon] in its name, all your Digimon with <Retaliation> can attack your opponent’s unsuspended level 4 or lower Digimon.