If I have exactly 3 cards in my security stack, do I activate both the "until the end of your opponent's turn, 1 of your Digimon can't have its DP reduced by your opponent's effects and isn't affected by <De-Digivolve> effects" effect and the "1 of your Digimon gains <Blocker> and <Reboot> until the end of your opponent's turn" effect when activating this card's [On Play] [When Digivolving] effect?