Not the most cunning of cards, perhaps, but then, Fire-types do, historically, tend toward the philosophy of simply watching the world burn.
Yennett makes for an interesting deck-building conceit as her ability to cast cards without paying their mana cost only applies to cards with odd mana values
Best Damage Prevention Payoffs Win conditions that require a long time to go off are commonly paired with these types of effects
Use toploaders for rare or expensive cards
Even the worst case scenario here, where you just draw a bunch of cards, is a very high floor, so its hard to go wrong
For the sites that sell second-hand items, you can often use these to find great deals on sealed products like booster packs or scour them to find excellent deals on pokemon card prices