Other variants within the MOM set included extended art, borderless planeswalkers, foil-etched treatment, and traditional foil treatments
For Silklash Spider, that means an activated ability with an X in it that deals direct damage to all fliers
Ichiga, Who Topples Oaks Legendary Creature Spirit Trample Remove a ki counter from Ichiga: Target creature gets +2/+2 until end of turn
Some have it built-in, like Tenacious Underdog , but there are plenty of other ways to pull things out of the graveyard, such as Graveyard Shift , Rogues Gallery , and Dig Up The Body
For the purposes of completing a set, such as for the set collection screen or for certain achievements, you'll similarly only need a single copy of a card from a specific set as you have a playset of cards with that same name
Thankfully, Battle Partners has already released in Japan, so we have some pricing data to look at