Merlin, Brilliant Vestige

Merlin Lineage [Sheen 8+] On Enter: You may banish a regalia card from your material deck. If you do, draw a card and put a preparation counter on your champion. [Sheen 24+] At the beginning of your end phase, look at target opponent's memory and banish a card from it. Until the end of that opponent's next turn, they may activate that card.