Let's take a look at two different Location cards, both included in the Ruby & Sapphire deck: As you can see from the above, these cards have a cost in Ink to play them (and both of these examples can be used as ink in your inkwell)
Best Energy Payoffs The payoffs are included in the list
Y'shtola, Night's BlessedY'shtola, Night's Blessed | Art by Magali Villeneuve | Celes, Rune KnightCeles, Rune Knight | Art by Nstor Ossandn Leal | Cloud, Ex-SOLDIERCloud, Ex-SOLDIER | Art by Justyna Dura | Tidus, Yuna's GuardianTidus, Yuna's Guardian | Art by Nijihayashi | Terra, Herald of HopeTerra, Herald of Hope | Art by Marta Nael Hey, nerds
In fact, playing cards can be seen in a variety of unique shapes and sizes
There are 51 different anime art cards that can be found in Foundations Jumpstart Boosters
Its already seeing quite a bit of play in Magic: The Gathering Online as there are so many ways to discard cards for value