Six mana is quite a lot, but I can see Ysthola fitting well into both flicker decks and decks that mess with upkeeps and endsteps
This marking indicates that it comes from the very first print run of the card, which gives it a special status among collectors who seek authenticity and age
BPhillipYork: Fairly flexible utility card, and okay costed if you're worried about bouncing creatures or blowing up artifacts and enchantments
There are also a fair amount of rare cards to be found in the Sword & Shield - Brilliant Stars Trainer Gallery
You could argue the card actually cost $4,000,000, since thats the amount Logan Paul paid in cash
If you want to speed up some of your big midrange and end-game creatures, Fervor is a card for you