[Digivolve] 1 from [Gankoomon]
<Blocker>
[When Digivolving] You may play 1 Digimon card with [Sistermon] in its name from your hand or trash without paying its play cost. Then, if [Gankoomon] is in this Digimon's digivolution cards or you have a Digimon with [Sistermon] in its name in play, until the end of your opponent's turn, all of your Digimon get +2000 DP and your opponent's effects can't return them to hands or decks or reduce their DP.
Rulings Q&A — 1 entries
Q1Q1990
This card's [When Digivolving] effect reads "all of your Digimon get +2000 DP and your opponent's effects can't return them to hands or decks or reduce their DP." If one of my Digimon's DP is reduced before this effect activates, what happens to that Digimon's DP?
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Official Ruling
Its original DP is restored by "can't [...] reduce their DP," and it additionally gets +2000 DP from this effect.