Spend your four mana at end of turn to grab a Dark Ritual for use next turn
Its vastly more accessible than its Special illustration rare version Umbreon EX (161/131) which currently holds the title of the most valuable Scarlet and Violet card in the entire series in terms of current market price
Once per turn, you may turn a card with an inkwell symbol from your hand into face-down ink, becoming a resource that you can turn sideways to summon characters You use 60-card decks in Constructed, 40-card decks in Limited, and the official website has an excellent "how to play" section
Now, Sphinxs Tutelage and Grindstone will mill six cards per activation
Cards with Escalate have multiple modal effects, one of these effects is activated when the card is played, and additional effects can be activated by paying an increased cost
This is normal for a starter deck to show off new cards while rounding it out to be playable and consistent