Currently, characters that continue to dominate the collector demand include: Charizard Pikachu Mew and Mewtwo Rayquaza Umbreon Cards that feature Pokmon, particularly in iconic artwork or chase slots, often maintain liquidity even in the slower markets
Mayhem Devil (93k), Dictate of Erebos (90k), Moldervine Reclamation (80k), and Fecundity (20k) are all at least playable, and with this treatment, I think the lair and the singles should do well if left alone, and Ill be getting a couple of these Lairs on Monday
Burn is a well known archetype and strategy with plenty of literature support
Smuggler's Copter was swiftly banned in Standard after Aether Revolt came out and Wizards said that Vehicles were overpowered
The advantage of Sage is cost but if that is what you are after then Nature's Claim, Degalmor or Naturalize should offer more utility
They're not unique: all of them are reprints from older Pokmon sets