The box is designed to be played in the pick-2 draft format, letting you choose two cards at a time from each pack to build your deck
If you somehow control Hollowmurk Siege and no choice was made for it (perhaps because another permanent on the battlefield became a copy of it), it has neither of the two abilities
while this card is in the Field Zone, that Set card cannot be activated until the End Phase, and your opponent must activate it during the End Phase or else send it to the GY
The first number is the number your card is in the set and the second number is the number of total cards in the set
However, like the rest of the Kamigawa: Neon Dynasty legendary spirit dragons, Atushi gives its controller a choice between two effects upon its demise
Team Rocket's Venusaur, Erika's Venusaur, Venusaur EX, Venusaur GX and so much more