From Master to Disciple

Effect

[Main] Reveal the top 3 cards of your deck. Add 1 card with [Huckmon] or [Sistermon] in its name or [Royal Knight] trait among them to your hand. Trash the rest. Then, place this card in your battle area. [Main] ＜Delay＞ (By trashing this card after the placing turn, activate the effect below.) ・The next time one of your Digimon would digivolve this turn, reduce the digivolution cost by 1.

Source Effect

Security Effect [Security] Reveal the top 3 cards of your deck. Add 1 card with [Huckmon] or [Sistermon] in its name or [Royal Knight] trait among them to your hand. Trash the rest. Then, place this card in your battle area.