Reppamon EX5-029

Effect: [When Attacking] By trashing the top card of your security stack, for the turn, when one of your Digimon would next digivolve, reduce the digivolution cost by 2.

Inherited Effect: [When Attacking] [Once Per Turn] If there’re 6 or fewer total cards in both players’ security stacks, 1 of your opponent’s Digimon gets -2000 DP for the turn.