If youre looking for easy upgrades, a synergistic favorite of mine is Kuldotha Forgemaster
Death-Parrot and Vile Bile are cheap creatures for pauper, with Vile Bile being essentially a drawback-less Erg Raiders (since Thrill-Kill Assassin is an uncommon)
In an era where early Magic: The Gathering decks leaned heavily on explosive starts, Balance was a reset button like no other
Summary Magic: The Gathering's Final Fantasy is on track to become the best-selling set in MTG history, despite not even being out yet
Of course, if you cant make the trade for whatever reason you have to sacrifice Gilded Drake, but since it is only costing you two mana, youre likely not going to be put out too much
Rarity and Balance Shifting our attention to the factors of rarity and balance, its important to note that a cards rarity (common, uncommon, rare or mythic rare) determines how difficult it is to obtain from booster packs