Those bigger things slots appear very flexible depending on who builds the deck, but a lot of the good options are other Wilds cards: Beanstalk Wurm and Blossoming Tortoise for ramp
Its very hard for me to just experience a card unto itself
If you live stateside, there are currently two ways to play the Pokmon TCG digitally
Reap and Sow Reap and Sow is a little more versatile than some other ramp options in green
To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases, then apply any cost reductions (such as that of Serpent of the Pass's second ability)
Unless the original itself has an anti-counterfeiting device, the item has been appraised by Wizard of the Coast to determine whether it is authentic or counterfeit, or has been exhibited at an authorized auction and has an appraisal certificate (the problem is that even the appraisal certificate can be forged)