Inferno X checks all three boxes
If its heads, the Pokmon can attack as usual
If tails, search your deck for a Basic Pokemon and put it into your hand
Each forum has its advantages and drawbacks, so research them to find what works best for you (for example, eBay has the widest reach, is easy to use, and is trusted by buyers, but it also takes a 10% commission from your sale)
Steelshapers Gift Tutors are always going to take up best-of slots, even hyper-specific ones like Steelshaper's Gift
Some D&D players really enjoy the idea of breaking the game, and Im sure that the above combo will show up in a number of Cubes around the world for this very reason