If I digivolve my Level 5 Purple Digimon into [BT4-087 Anubismon] while under the effects of [EX1-071 Win Rate 60%], and trash this card from the hand. Can I use the [When Digivolving] effect of [BT4-087 Anubismon] before the "when this card is trashed from your hand" effect of SkullGreymon?
Yes, they both trigger at the same time. So you can choose which effect to activate first.