You earn them by completing the battles in the Gible Drop Event. One battle requires one token of Event Stamina , which recharges passively over time or can be replenished with Event Hourglasses
Sometimes, infinite mana feels like birdseed, and you need a Helix Pinnacle to swoop in and eat it all up
Other Artist's Work: Anson prefers to not alter other artist's cards/work, nor will he sign cards which have been altered by another artist - Thank you for your understanding regarding this
[F][C] Drill Smash: 60+ damage
This is because as the number of players increases, the number of creatures on the battlefield generally increases too
I think for at least some of the people who bid for these expensive cards, it's more about regaining a lost part of their childhood than it is about snagging a card they can hopefully sell in a few years for a profit