Gold cards should (in the long run) hold and increase their value, especially those with Charizard printed on them, gold cards being hyper rare cards are some of the hardest to pull from Pokmon expansions
Play Vivi and other threats that grow as we cast spells, like Red Mage's Rapier, Astrologian's Planisphere, and Monastery Swiftspear, and then cast as many cheap card-draw and removal spells as possible to grow our creatures
It fetches up to $147 on the secondary market
If the opponent doesnt have a hate card, you can just grab their best card and slow them down
Bloodline Keeper / Lord of Lineage Hey, first reprint for this guy as well, and its about time
Otherwise, the Location gaining Lore could be quite unexpected and do well